851854974 has 8 divisors (see below), whose sum is σ = 1703709960. Its totient is φ = 283951656.

The previous prime is 851854963. The next prime is 851854981. The reversal of 851854974 is 479458158.

It is a sphenic number, since it is the product of 3 distinct primes.

851854974 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70987909 + ... + 70987920.

It is an arithmetic number, because the mean of its divisors is an integer number (212963745).

Almost surely, 2^851854974 is an apocalyptic number.

851854974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

851854974 is a wasteful number, since it uses less digits than its factorization.

851854974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141975834.

The product of its digits is 1612800, while the sum is 51.

The square root of 851854974 is about 29186.5546784817. The cubic root of 851854974 is about 947.9568180762.

The spelling of 851854974 in words is "eight hundred fifty-one million, eight hundred fifty-four thousand, nine hundred seventy-four".