851260990 has 32 divisors (see below), whose sum is σ = 1623651840. Its totient is φ = 320436000.

The previous prime is 851260877. The next prime is 851260999. The reversal of 851260990 is 99062158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851260999) 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, 13855 + ... + 43525.

It is an arithmetic number, because the mean of its divisors is an integer number (50739120).

Almost surely, 2^851260990 is an apocalyptic number.

851260990 is a deficient number, since it is larger than the sum of its proper divisors (772390850).

851260990 is a wasteful number, since it uses less digits than its factorization.

851260990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29848.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 851260990 is about 29176.3772596942. The cubic root of 851260990 is about 947.7364354508.

The spelling of 851260990 in words is "eight hundred fifty-one million, two hundred sixty thousand, nine hundred ninety".