851244356 has 6 divisors (see below), whose sum is σ = 1489677630. Its totient is φ = 425622176.

The previous prime is 851244341. The next prime is 851244377. The reversal of 851244356 is 653442158.

It can be written as a sum of positive squares in only one way, i.e., 845646400 + 5597956 = 29080^2 + 2366^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106405541 + ... + 106405548.

It is an arithmetic number, because the mean of its divisors is an integer number (248279605).

Almost surely, 2^851244356 is an apocalyptic number.

It is an amenable number.

851244356 is a deficient number, since it is larger than the sum of its proper divisors (638433274).

851244356 is a wasteful number, since it uses less digits than its factorization.

851244356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212811093 (or 212811091 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 851244356 is about 29176.0921989220. The cubic root of 851244356 is about 947.7302623536.

The spelling of 851244356 in words is "eight hundred fifty-one million, two hundred forty-four thousand, three hundred fifty-six".