1899790344 has 48 divisors (see below), whose sum is σ = 5229626220. Its totient is φ = 622880640.

The previous prime is 1899790327. The next prime is 1899790357. The reversal of 1899790344 is 4430979981.

It can be written as a sum of positive squares in 2 ways, for example, as 1440202500 + 459587844 = 37950^2 + 21438^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211887 + ... + 220670.

Almost surely, 2^1899790344 is an apocalyptic number.

It is an amenable number.

1899790344 is an abundant number, since it is smaller than the sum of its proper divisors (3329835876).

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

1899790344 is a wasteful number, since it uses less digits than its factorization.

1899790344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432630 (or 432623 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 1899790344 is about 43586.5844498052. The cubic root of 1899790344 is about 1238.5167714590.

The spelling of 1899790344 in words is "one billion, eight hundred ninety-nine million, seven hundred ninety thousand, three hundred forty-four".