1890334940 has 24 divisors (see below), whose sum is σ = 4275065760. Its totient is φ = 697969728.

The previous prime is 1890334939. The next prime is 1890334969. The reversal of 1890334940 is 494330981.

It is a congruent 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, 3635000 + ... + 3635519.

It is an arithmetic number, because the mean of its divisors is an integer number (178127740).

Almost surely, 2^1890334940 is an apocalyptic number.

1890334940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1890334940 is an abundant number, since it is smaller than the sum of its proper divisors (2384730820).

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

1890334940 is a wasteful number, since it uses less digits than its factorization.

1890334940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7270541 (or 7270539 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1890334940 is about 43477.9822438898. The cubic root of 1890334940 is about 1236.4586217819.

The spelling of 1890334940 in words is "one billion, eight hundred ninety million, three hundred thirty-four thousand, nine hundred forty".