18686040962 has 4 divisors (see below), whose sum is σ = 28029061446. Its totient is φ = 9343020480.

The previous prime is 18686040937. The next prime is 18686040991. The reversal of 18686040962 is 26904068681.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26904068681 = 7 ⋅3843438383.

It can be written as a sum of positive squares in only one way, i.e., 14977109161 + 3708931801 = 122381^2 + 60901^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18686040962.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4671510239 + ... + 4671510242.

Almost surely, 2^18686040962 is an apocalyptic number.

18686040962 is a deficient number, since it is larger than the sum of its proper divisors (9343020484).

18686040962 is an equidigital number, since it uses as much as digits as its factorization.

18686040962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343020483.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 18686040962 in words is "eighteen billion, six hundred eighty-six million, forty thousand, nine hundred sixty-two".