190734745897 has 16 divisors (see below), whose sum is σ = 199920188160. Its totient is φ = 181625032512.

The previous prime is 190734745889. The next prime is 190734745907. The reversal of 190734745897 is 798547437091.

It is a happy number.

It is not a de Polignac number, because 190734745897 - 2³ = 190734745889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190734745837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6501979 + ... + 6531247.

It is an arithmetic number, because the mean of its divisors is an integer number (12495011760).

Almost surely, 2^190734745897 is an apocalyptic number.

It is an amenable number.

190734745897 is a deficient number, since it is larger than the sum of its proper divisors (9185442263).

190734745897 is a wasteful number, since it uses less digits than its factorization.

190734745897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30552.

The product of its (nonzero) digits is 53343360, while the sum is 64.

The spelling of 190734745897 in words is "one hundred ninety billion, seven hundred thirty-four million, seven hundred forty-five thousand, eight hundred ninety-seven".