1899000028 has 48 divisors (see below), whose sum is σ = 3630330144. Its totient is φ = 865751040.

The previous prime is 1899000023. The next prime is 1899000091. The reversal of 1899000028 is 8200009981.

It is a super-2 number, since 2×1899000028² = 7212402212688001568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899000023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274500 + ... + 281332.

It is an arithmetic number, because the mean of its divisors is an integer number (75631878).

Almost surely, 2^1899000028 is an apocalyptic number.

It is an amenable number.

1899000028 is a deficient number, since it is larger than the sum of its proper divisors (1731330116).

1899000028 is a wasteful number, since it uses less digits than its factorization.

1899000028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6982 (or 6980 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1899000028 is about 43577.5174602684. The cubic root of 1899000028 is about 1238.3450059472.

The spelling of 1899000028 in words is "one billion, eight hundred ninety-nine million, twenty-eight", and thus it is an aban number.