18957440102 has 8 divisors (see below), whose sum is σ = 29204705136. Its totient is φ = 9222538392.

The previous prime is 18957440101. The next prime is 18957440113. The reversal of 18957440102 is 20104475981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18957440102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18957440101) 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, 128090738 + ... + 128090885.

It is an arithmetic number, because the mean of its divisors is an integer number (3650588142).

Almost surely, 2^18957440102 is an apocalyptic number.

18957440102 is a deficient number, since it is larger than the sum of its proper divisors (10247265034).

18957440102 is a wasteful number, since it uses less digits than its factorization.

18957440102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256181662.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 18957440102 in words is "eighteen billion, nine hundred fifty-seven million, four hundred forty thousand, one hundred two".