190491923486 has 8 divisors (see below), whose sum is σ = 285739813944. Its totient is φ = 95245318840.

The previous prime is 190491923477. The next prime is 190491923491. The reversal of 190491923486 is 684329194091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257381 + ... + 668751.

It is an arithmetic number, because the mean of its divisors is an integer number (35717476743).

Almost surely, 2^190491923486 is an apocalyptic number.

190491923486 is a deficient number, since it is larger than the sum of its proper divisors (95247890458).

190491923486 is a wasteful number, since it uses less digits than its factorization.

190491923486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642906.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The spelling of 190491923486 in words is "one hundred ninety billion, four hundred ninety-one million, nine hundred twenty-three thousand, four hundred eighty-six".