856154181796 has 9 divisors (see below), whose sum is σ = 1498273056651. Its totient is φ = 428076165612.

The previous prime is 856154181791. The next prime is 856154181829. The reversal of 856154181796 is 697181451658.

The square root of 856154181796 is 925286.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856154181791) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1619251 + ... + 2081893.

Almost surely, 2^856154181796 is an apocalyptic number.

856154181796 is the 925286-th square number.

It is an amenable number.

856154181796 is a deficient number, since it is larger than the sum of its proper divisors (642118874855).

856154181796 is an frugal number, since it uses more digits than its factorization.

856154181796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925290 (or 462645 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 61.

The spelling of 856154181796 in words is "eight hundred fifty-six billion, one hundred fifty-four million, one hundred eighty-one thousand, seven hundred ninety-six".