851142546 has 16 divisors (see below), whose sum is σ = 1891428000. Its totient is φ = 283714164.

The previous prime is 851142517. The next prime is 851142557. The reversal of 851142546 is 645241158.

It is a happy number.

It is a super-2 number, since 2×851142546² = 1448887267222724232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 851142546.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7880896 + ... + 7881003.

It is an arithmetic number, because the mean of its divisors is an integer number (118214250).

Almost surely, 2^851142546 is an apocalyptic number.

851142546 is an abundant number, since it is smaller than the sum of its proper divisors (1040285454).

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

851142546 is a wasteful number, since it uses less digits than its factorization.

851142546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15761910 (or 15761904 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 851142546 is about 29174.3473963001. The cubic root of 851142546 is about 947.6924775647.

The spelling of 851142546 in words is "eight hundred fifty-one million, one hundred forty-two thousand, five hundred forty-six".