1890990924 has 24 divisors (see below), whose sum is σ = 4415674368. Its totient is φ = 629850000.

The previous prime is 1890990883. The next prime is 1890990949. The reversal of 1890990924 is 4290990981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43452 + ... + 75299.

It is an arithmetic number, because the mean of its divisors is an integer number (183986432).

Almost surely, 2^1890990924 is an apocalyptic number.

It is an amenable number.

1890990924 is an abundant number, since it is smaller than the sum of its proper divisors (2524683444).

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

1890990924 is a wasteful number, since it uses less digits than its factorization.

1890990924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120085 (or 120083 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 51.

The square root of 1890990924 is about 43485.5254538795. The cubic root of 1890990924 is about 1236.6016305245.

The spelling of 1890990924 in words is "one billion, eight hundred ninety million, nine hundred ninety thousand, nine hundred twenty-four".