195090891582 has 16 divisors (see below), whose sum is σ = 390410113680. Its totient is φ = 64992242112.

The previous prime is 195090891553. The next prime is 195090891599. The reversal of 195090891582 is 285198090591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9502663 + ... + 9523170.

It is an arithmetic number, because the mean of its divisors is an integer number (24400632105).

Almost surely, 2^195090891582 is an apocalyptic number.

195090891582 is an abundant number, since it is smaller than the sum of its proper divisors (195319222098).

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

195090891582 is a wasteful number, since it uses less digits than its factorization.

195090891582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19027547.

The product of its (nonzero) digits is 2332800, while the sum is 57.

The spelling of 195090891582 in words is "one hundred ninety-five billion, ninety million, eight hundred ninety-one thousand, five hundred eighty-two".