18490253932 has 48 divisors (see below), whose sum is σ = 35951247360. Its totient is φ = 8276356352.

The previous prime is 18490253917. The next prime is 18490253933. The reversal of 18490253932 is 23935209481.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (18490253933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246933 + ... + 312979.

It is an arithmetic number, because the mean of its divisors is an integer number (748984320).

Almost surely, 2^18490253932 is an apocalyptic number.

It is an amenable number.

18490253932 is a deficient number, since it is larger than the sum of its proper divisors (17460993428).

18490253932 is a wasteful number, since it uses less digits than its factorization.

18490253932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66270 (or 66268 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 18490253932 in words is "eighteen billion, four hundred ninety million, two hundred fifty-three thousand, nine hundred thirty-two".