190577797442 has 18 divisors (see below), whose sum is σ = 293048034699. Its totient is φ = 92952431680.

The previous prime is 190577797409. The next prime is 190577797489. The reversal of 190577797442 is 244797775091.

It can be written as a sum of positive squares in 5 ways, for example, as 447787921 + 190130009521 = 21161^2 + 436039^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=308689.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25308734 + ... + 25316262.

Almost surely, 2^190577797442 is an apocalyptic number.

190577797442 is a deficient number, since it is larger than the sum of its proper divisors (102470237257).

190577797442 is an frugal number, since it uses more digits than its factorization.

190577797442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15142 (or 7572 counting only the distinct ones).

The product of its (nonzero) digits is 31116960, while the sum is 62.

The spelling of 190577797442 in words is "one hundred ninety billion, five hundred seventy-seven million, seven hundred ninety-seven thousand, four hundred forty-two".