1886990725 has 12 divisors (see below), whose sum is σ = 2441602656. Its totient is φ = 1443957680.

The previous prime is 1886990663. The next prime is 1886990731. The reversal of 1886990725 is 5270996881.

It is not a de Polignac number, because 1886990725 - 2⁷ = 1886990597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1640287 + ... + 1641436.

It is an arithmetic number, because the mean of its divisors is an integer number (203466888).

Almost surely, 2^1886990725 is an apocalyptic number.

It is an amenable number.

1886990725 is a deficient number, since it is larger than the sum of its proper divisors (554611931).

1886990725 is a wasteful number, since it uses less digits than its factorization.

1886990725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281756 (or 3281751 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The square root of 1886990725 is about 43439.5065004196. The cubic root of 1886990725 is about 1235.7290466154.

The spelling of 1886990725 in words is "one billion, eight hundred eighty-six million, nine hundred ninety thousand, seven hundred twenty-five".