18906397202 has 16 divisors (see below), whose sum is σ = 35357418432. Its totient is φ = 7366128720.

The previous prime is 18906397201. The next prime is 18906397271. The reversal of 18906397202 is 20279360981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18906397201) 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, 61384253 + ... + 61384560.

It is an arithmetic number, because the mean of its divisors is an integer number (2209838652).

Almost surely, 2^18906397202 is an apocalyptic number.

18906397202 is a deficient number, since it is larger than the sum of its proper divisors (16451021230).

18906397202 is a wasteful number, since it uses less digits than its factorization.

18906397202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122768833.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 18906397202 in words is "eighteen billion, nine hundred six million, three hundred ninety-seven thousand, two hundred two".