1899008442 has 32 divisors (see below), whose sum is σ = 4224936000. Its totient is φ = 632265264.

The previous prime is 1899008431. The next prime is 1899008453. The reversal of 1899008442 is 2448009981.

It is an interprime number because it is at equal distance from previous prime (1899008431) and next prime (1899008453).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27309 + ... + 67407.

It is an arithmetic number, because the mean of its divisors is an integer number (132029250).

Almost surely, 2^1899008442 is an apocalyptic number.

1899008442 is an abundant number, since it is smaller than the sum of its proper divisors (2325927558).

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

1899008442 is a wasteful number, since it uses less digits than its factorization.

1899008442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40987 (or 40981 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1899008442 is about 43577.6140007688. The cubic root of 1899008442 is about 1238.3468348781.

The spelling of 1899008442 in words is "one billion, eight hundred ninety-nine million, eight thousand, four hundred forty-two".