851950980 has 96 divisors (see below), whose sum is σ = 2741961600. Its totient is φ = 219348864.

The previous prime is 851950969. The next prime is 851950993. The reversal of 851950980 is 89059158.

851950980 is a `hidden beast` number, since 8 + 519 + 50 + 9 + 80 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 11542 + ... + 42861.

It is an arithmetic number, because the mean of its divisors is an integer number (28562100).

Almost surely, 2^851950980 is an apocalyptic number.

It is an amenable number.

851950980 is an abundant number, since it is smaller than the sum of its proper divisors (1890010620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

851950980 is a wasteful number, since it uses less digits than its factorization.

851950980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54450 (or 54442 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 851950980 is about 29188.1993278105. The cubic root of 851950980 is about 947.9924290374.

The spelling of 851950980 in words is "eight hundred fifty-one million, nine hundred fifty thousand, nine hundred eighty".