1890813532 has 24 divisors (see below), whose sum is σ = 3456381600. Its totient is φ = 903361536.

The previous prime is 1890813527. The next prime is 1890813569. The reversal of 1890813532 is 2353180981.

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, 82644 + ... + 103012.

It is an arithmetic number, because the mean of its divisors is an integer number (144015900).

Almost surely, 2^1890813532 is an apocalyptic number.

It is an amenable number.

1890813532 is a deficient number, since it is larger than the sum of its proper divisors (1565568068).

1890813532 is a wasteful number, since it uses less digits than its factorization.

1890813532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21405 (or 21403 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1890813532 is about 43483.4857388411. The cubic root of 1890813532 is about 1236.5629611874.

The spelling of 1890813532 in words is "one billion, eight hundred ninety million, eight hundred thirteen thousand, five hundred thirty-two".