18764774392 has 192 divisors, whose sum is σ = 44675599680. Its totient is φ = 7233048576.

The previous prime is 18764774389. The next prime is 18764774401. The reversal of 18764774392 is 29347746781.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108466818 + ... + 108466990.

It is an arithmetic number, because the mean of its divisors is an integer number (232685415).

Almost surely, 2^18764774392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18764774392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22337799840).

18764774392 is an abundant number, since it is smaller than the sum of its proper divisors (25910825288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18764774392 is a wasteful number, since it uses less digits than its factorization.

18764774392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 425 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 58.

The spelling of 18764774392 in words is "eighteen billion, seven hundred sixty-four million, seven hundred seventy-four thousand, three hundred ninety-two".