18977713942 has 16 divisors (see below), whose sum is σ = 31085254800. Its totient is φ = 8617674240.

The previous prime is 18977713913. The next prime is 18977713943. The reversal of 18977713942 is 24931777981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18977713943) 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, 405267 + ... + 449662.

It is an arithmetic number, because the mean of its divisors is an integer number (1942828425).

Almost surely, 2^18977713942 is an apocalyptic number.

18977713942 is a deficient number, since it is larger than the sum of its proper divisors (12107540858).

18977713942 is a wasteful number, since it uses less digits than its factorization.

18977713942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855951.

The product of its digits is 5334336, while the sum is 58.

The spelling of 18977713942 in words is "eighteen billion, nine hundred seventy-seven million, seven hundred thirteen thousand, nine hundred forty-two".