18387692746 has 32 divisors (see below), whose sum is σ = 29653602048. Its totient is φ = 8531360640.

The previous prime is 18387692717. The next prime is 18387692837. The reversal of 18387692746 is 64729678381.

It is a happy number.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159955 + ... + 249721.

It is an arithmetic number, because the mean of its divisors is an integer number (926675064).

Almost surely, 2^18387692746 is an apocalyptic number.

18387692746 is a deficient number, since it is larger than the sum of its proper divisors (11265909302).

18387692746 is a wasteful number, since it uses less digits than its factorization.

18387692746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89926.

The product of its digits is 24385536, while the sum is 61.

The spelling of 18387692746 in words is "eighteen billion, three hundred eighty-seven million, six hundred ninety-two thousand, seven hundred forty-six".