18957668007 has 8 divisors (see below), whose sum is σ = 25299811584. Its totient is φ = 12626984888.

The previous prime is 18957667991. The next prime is 18957668011. The reversal of 18957668007 is 70086675981.

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

It is a cyclic number.

It is not a de Polignac number, because 18957668007 - 2⁴ = 18957667991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18957668017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2861253 + ... + 2867870.

It is an arithmetic number, because the mean of its divisors is an integer number (3162476448).

Almost surely, 2^18957668007 is an apocalyptic number.

18957668007 is a deficient number, since it is larger than the sum of its proper divisors (6342143577).

18957668007 is a wasteful number, since it uses less digits than its factorization.

18957668007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730229.

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 18957668007 in words is "eighteen billion, nine hundred fifty-seven million, six hundred sixty-eight thousand, seven".