856745154 has 16 divisors (see below), whose sum is σ = 1903878240. Its totient is φ = 285581700.

The previous prime is 856745137. The next prime is 856745161. The reversal of 856745154 is 451547658.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7932772 + ... + 7932879.

It is an arithmetic number, because the mean of its divisors is an integer number (118992390).

Almost surely, 2^856745154 is an apocalyptic number.

856745154 is an abundant number, since it is smaller than the sum of its proper divisors (1047133086).

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

856745154 is a wasteful number, since it uses less digits than its factorization.

856745154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15865662 (or 15865656 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 856745154 is about 29270.2093262074. The cubic root of 856745154 is about 949.7673129102.

The spelling of 856745154 in words is "eight hundred fifty-six million, seven hundred forty-five thousand, one hundred fifty-four".