1890740836 has 24 divisors (see below), whose sum is σ = 3340211616. Its totient is φ = 936425280.

The previous prime is 1890740777. The next prime is 1890740837. The reversal of 1890740836 is 6380470981.

It is a happy number.

It is a super-3 number, since 3×1890740836³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1890740837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265555 + ... + 272581.

It is an arithmetic number, because the mean of its divisors is an integer number (139175484).

Almost surely, 2^1890740836 is an apocalyptic number.

It is an amenable number.

1890740836 is a deficient number, since it is larger than the sum of its proper divisors (1449470780).

1890740836 is a wasteful number, since it uses less digits than its factorization.

1890740836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659 (or 7657 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 1890740836 is about 43482.6498272587. The cubic root of 1890740836 is about 1236.5471136291.

The spelling of 1890740836 in words is "one billion, eight hundred ninety million, seven hundred forty thousand, eight hundred thirty-six".