190891022855754 has 16 divisors (see below), whose sum is σ = 411149895381792. Its totient is φ = 58735699340208.

The previous prime is 190891022855719. The next prime is 190891022855759. The reversal of 190891022855754 is 457558220198091.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (190891022855759) 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, 1223660402844 + ... + 1223660402999.

It is an arithmetic number, because the mean of its divisors is an integer number (25696868461362).

Almost surely, 2^{190891022855754} is an apocalyptic number.

190891022855754 is an abundant number, since it is smaller than the sum of its proper divisors (220258872526038).

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

190891022855754 is a wasteful number, since it uses less digits than its factorization.

190891022855754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447320805861.

The product of its (nonzero) digits is 72576000, while the sum is 66.

The spelling of 190891022855754 in words is "one hundred ninety trillion, eight hundred ninety-one billion, twenty-two million, eight hundred fifty-five thousand, seven hundred fifty-four".