151880985 has 24 divisors (see below), whose sum is σ = 263881800. Its totient is φ = 80812032.

The previous prime is 151880947. The next prime is 151881001. The reversal of 151880985 is 589088151.

It can be written as a sum of positive squares in 4 ways, for example, as 54641664 + 97239321 = 7392^2 + 9861^2 .

It is not a de Polignac number, because 151880985 - 2⁶ = 151880921 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 151880985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16447 + ... + 23963.

It is an arithmetic number, because the mean of its divisors is an integer number (10995075).

Almost surely, 2^151880985 is an apocalyptic number.

151880985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151880985 is a deficient number, since it is larger than the sum of its proper divisors (112000815).

151880985 is a wasteful number, since it uses less digits than its factorization.

151880985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7977 (or 7974 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 45.

The square root of 151880985 is about 12324.0003651412. Note that the first 3 decimals coincide. The cubic root of 151880985 is about 533.5410039786.

The spelling of 151880985 in words is "one hundred fifty-one million, eight hundred eighty thousand, nine hundred eighty-five".