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325982989 = 1804918061
BaseRepresentation
bin10011011011100…
…001101100001101
3211201101122121001
4103123201230031
51131422423424
652202540301
711035544503
oct2333415415
9751348531
10325982989
11158010932
1291207691
13526c7557
1431418673
151d942844
hex136e1b0d

325982989 has 4 divisors (see below), whose sum is σ = 326019100. Its totient is φ = 325946880.

The previous prime is 325982941. The next prime is 325982999. The reversal of 325982989 is 989289523.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 989289523 = 1496639527.

It can be written as a sum of positive squares in 2 ways, for example, as 273637764 + 52345225 = 16542^2 + 7235^2 .

It is a cyclic number.

It is not a de Polignac number, because 325982989 - 27 = 325982861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325982999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9019 + ... + 27079.

It is an arithmetic number, because the mean of its divisors is an integer number (81504775).

Almost surely, 2325982989 is an apocalyptic number.

It is an amenable number.

325982989 is a deficient number, since it is larger than the sum of its proper divisors (36111).

325982989 is a wasteful number, since it uses less digits than its factorization.

325982989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36110.

The product of its digits is 2799360, while the sum is 55.

The square root of 325982989 is about 18054.9990030462. Note that the first 3 decimals coincide. The cubic root of 325982989 is about 688.2269038462.

The spelling of 325982989 in words is "three hundred twenty-five million, nine hundred eighty-two thousand, nine hundred eighty-nine".

Divisors: 1 18049 18061 325982989