18958174494 has 32 divisors (see below), whose sum is σ = 43337327616. Its totient is φ = 5416076640.

The previous prime is 18958174489. The next prime is 18958174513. The reversal of 18958174494 is 49447185981.

It is a congruent number.

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, 602779 + ... + 633449.

It is an arithmetic number, because the mean of its divisors is an integer number (1354291488).

Almost surely, 2^18958174494 is an apocalyptic number.

18958174494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18958174494 is an abundant number, since it is smaller than the sum of its proper divisors (24379153122).

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

18958174494 is a wasteful number, since it uses less digits than its factorization.

18958174494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45400.

The product of its digits is 11612160, while the sum is 60.

The spelling of 18958174494 in words is "eighteen billion, nine hundred fifty-eight million, one hundred seventy-four thousand, four hundred ninety-four".