1880189389 has 12 divisors (see below), whose sum is σ = 2042047956. Its totient is φ = 1730356992.

The previous prime is 1880189369. The next prime is 1880189413. The reversal of 1880189389 is 9839810881.

It can be written as a sum of positive squares in 6 ways, for example, as 756800100 + 1123389289 = 27510^2 + 33517^2 .

It is not a de Polignac number, because 1880189389 - 2²⁹ = 1343318477 is a prime.

It is a super-2 number, since 2×1880189389² = 7070224277016386642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1880189359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40447 + ... + 73459.

It is an arithmetic number, because the mean of its divisors is an integer number (170170663).

Almost surely, 2^1880189389 is an apocalyptic number.

It is an amenable number.

1880189389 is a deficient number, since it is larger than the sum of its proper divisors (161858567).

1880189389 is a wasteful number, since it uses less digits than its factorization.

1880189389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33376 (or 33363 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 55.

The square root of 1880189389 is about 43361.1506881448. The cubic root of 1880189389 is about 1234.2426011572.

The spelling of 1880189389 in words is "one billion, eight hundred eighty million, one hundred eighty-nine thousand, three hundred eighty-nine".