1890138683 has 16 divisors (see below), whose sum is σ = 1936037376. Its totient is φ = 1844976000.

The previous prime is 1890138667. The next prime is 1890138707. The reversal of 1890138683 is 3868310981.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1890138683 - 2⁴ = 1890138667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1890138983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2921066 + ... + 2921712.

It is an arithmetic number, because the mean of its divisors is an integer number (121002336).

Almost surely, 2^1890138683 is an apocalyptic number.

1890138683 is a deficient number, since it is larger than the sum of its proper divisors (45898693).

1890138683 is a wasteful number, since it uses less digits than its factorization.

1890138683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 1890138683 is about 43475.7252153429. The cubic root of 1890138683 is about 1236.4158300606.

The spelling of 1890138683 in words is "one billion, eight hundred ninety million, one hundred thirty-eight thousand, six hundred eighty-three".