18926156794 has 16 divisors (see below), whose sum is σ = 29190264840. Its totient is φ = 9199344960.

The previous prime is 18926156779. The next prime is 18926156827. The reversal of 18926156794 is 49765162981.

It can be written as a sum of positive squares in 4 ways, for example, as 18759411225 + 166745569 = 136965^2 + 12913^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807477 + ... + 830584.

Almost surely, 2^18926156794 is an apocalyptic number.

18926156794 is a deficient number, since it is larger than the sum of its proper divisors (10264108046).

18926156794 is a wasteful number, since it uses less digits than its factorization.

18926156794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638225.

The product of its digits is 6531840, while the sum is 58.

The spelling of 18926156794 in words is "eighteen billion, nine hundred twenty-six million, one hundred fifty-six thousand, seven hundred ninety-four".