851909954 has 16 divisors (see below), whose sum is σ = 1537281600. Its totient is φ = 345888144.

The previous prime is 851909953. The next prime is 851909959. The reversal of 851909954 is 459909158.

It is not an unprimeable number, because it can be changed into a prime (851909953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601069 + ... + 1601600.

It is an arithmetic number, because the mean of its divisors is an integer number (96080100).

Almost surely, 2^851909954 is an apocalyptic number.

851909954 is a deficient number, since it is larger than the sum of its proper divisors (685371646).

851909954 is a wasteful number, since it uses less digits than its factorization.

851909954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202697.

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 851909954 is about 29187.4965353317. The cubic root of 851909954 is about 947.9772118232.

The spelling of 851909954 in words is "eight hundred fifty-one million, nine hundred nine thousand, nine hundred fifty-four".