890187945 has 32 divisors (see below), whose sum is σ = 1452823680. Its totient is φ = 465315840.

The previous prime is 890187937. The next prime is 890187953. The reversal of 890187945 is 549781098.

It is an interprime number because it is at equal distance from previous prime (890187937) and next prime (890187953).

It is not a de Polignac number, because 890187945 - 2³ = 890187937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279321 + ... + 282489.

It is an arithmetic number, because the mean of its divisors is an integer number (45400740).

Almost surely, 2^890187945 is an apocalyptic number.

It is an amenable number.

890187945 is a deficient number, since it is larger than the sum of its proper divisors (562635735).

890187945 is a wasteful number, since it uses less digits than its factorization.

890187945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 890187945 is about 29836.0175794291. The cubic root of 890187945 is about 961.9678763281.

The spelling of 890187945 in words is "eight hundred ninety million, one hundred eighty-seven thousand, nine hundred forty-five".