816185376 has 48 divisors (see below), whose sum is σ = 2380543200. Its totient is φ = 272061504.

The previous prime is 816185341. The next prime is 816185387. The reversal of 816185376 is 673581618.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×816185376² = 1332317135992522752, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471466 + ... + 473193.

It is an arithmetic number, because the mean of its divisors is an integer number (49594650).

Almost surely, 2^816185376 is an apocalyptic number.

It is an amenable number.

816185376 is an abundant number, since it is smaller than the sum of its proper divisors (1564357824).

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

816185376 is a wasteful number, since it uses less digits than its factorization.

816185376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944678 (or 944664 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 816185376 is about 28568.9582589215. The cubic root of 816185376 is about 934.5365031898.

The spelling of 816185376 in words is "eight hundred sixteen million, one hundred eighty-five thousand, three hundred seventy-six".