1990895504 has 40 divisors (see below), whose sum is σ = 4161343032. Its totient is φ = 917268480.

The previous prime is 1990895503. The next prime is 1990895509. The reversal of 1990895504 is 4055980991.

It can be written as a sum of positive squares in 4 ways, for example, as 85747600 + 1905147904 = 9260^2 + 43648^2 .

It is not an unprimeable number, because it can be changed into a prime (1990895503) 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, 115274 + ... + 131414.

Almost surely, 2^1990895504 is an apocalyptic number.

It is an amenable number.

1990895504 is an abundant number, since it is smaller than the sum of its proper divisors (2170447528).

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

1990895504 is a wasteful number, since it uses less digits than its factorization.

1990895504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755 (or 16749 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 1990895504 is about 44619.4520809030. The cubic root of 1990895504 is about 1258.0063171430.

The spelling of 1990895504 in words is "one billion, nine hundred ninety million, eight hundred ninety-five thousand, five hundred four".