18000970452 has 36 divisors (see below), whose sum is σ = 45692861760. Its totient is φ = 5975214672.

The previous prime is 18000970439. The next prime is 18000970453. The reversal of 18000970452 is 25407900081.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000970453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1037478 + ... + 1054685.

It is an arithmetic number, because the mean of its divisors is an integer number (1269246160).

Almost surely, 2^18000970452 is an apocalyptic number.

18000970452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18000970452 is an abundant number, since it is smaller than the sum of its proper divisors (27691891308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18000970452 is a wasteful number, since it uses less digits than its factorization.

18000970452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092412 (or 2092407 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 18000970452 in words is "eighteen billion, nine hundred seventy thousand, four hundred fifty-two".