1890969800 has 48 divisors (see below), whose sum is σ = 4490069760. Its totient is φ = 740290880.

The previous prime is 1890969799. The next prime is 1890969809. The reversal of 1890969800 is 89690981.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (1890969809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91184 + ... + 109983.

It is an arithmetic number, because the mean of its divisors is an integer number (93543120).

Almost surely, 2^1890969800 is an apocalyptic number.

1890969800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1890969800 is an abundant number, since it is smaller than the sum of its proper divisors (2599099960).

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

1890969800 is a wasteful number, since it uses less digits than its factorization.

1890969800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201230 (or 201221 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 1890969800 is about 43485.2825677838. The cubic root of 1890969800 is about 1236.5970258717.

The spelling of 1890969800 in words is "one billion, eight hundred ninety million, nine hundred sixty-nine thousand, eight hundred".