812371616 has 48 divisors (see below), whose sum is σ = 1886814720. Its totient is φ = 336925440.

The previous prime is 812371613. The next prime is 812371687. The reversal of 812371616 is 616173218.

It is not an unprimeable number, because it can be changed into a prime (812371613) 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, 51551 + ... + 65438.

It is an arithmetic number, because the mean of its divisors is an integer number (39308640).

Almost surely, 2^812371616 is an apocalyptic number.

It is an amenable number.

812371616 is an abundant number, since it is smaller than the sum of its proper divisors (1074443104).

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

812371616 is a wasteful number, since it uses less digits than its factorization.

812371616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117037 (or 117029 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 812371616 is about 28502.1335341760. The cubic root of 812371616 is about 933.0786384398.

The spelling of 812371616 in words is "eight hundred twelve million, three hundred seventy-one thousand, six hundred sixteen".