185193157994 has 16 divisors (see below), whose sum is σ = 299344405248. Its totient is φ = 85420557552.

The previous prime is 185193157973. The next prime is 185193157997. The reversal of 185193157994 is 499751391581.

It is a super-2 number, since 2×185193157994² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (185193157997) 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, 2174402 + ... + 2257965.

It is an arithmetic number, because the mean of its divisors is an integer number (18709025328).

Almost surely, 2^185193157994 is an apocalyptic number.

185193157994 is a deficient number, since it is larger than the sum of its proper divisors (114151247254).

185193157994 is a wasteful number, since it uses less digits than its factorization.

185193157994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433989.

The product of its digits is 12247200, while the sum is 62.

The spelling of 185193157994 in words is "one hundred eighty-five billion, one hundred ninety-three million, one hundred fifty-seven thousand, nine hundred ninety-four".