80955819 has 48 divisors (see below), whose sum is σ = 142534080. Its totient is φ = 43223040.

The previous prime is 80955817. The next prime is 80955841. The reversal of 80955819 is 91855908.

80955819 is a `hidden beast` number, since 80 + 9 + 558 + 19 = 666.

It is not a de Polignac number, because 80955819 - 2¹ = 80955817 is a prime.

It is a super-2 number, since 2×80955819² = 13107689259921522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80955811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 287959 + ... + 288239.

It is an arithmetic number, because the mean of its divisors is an integer number (2969460).

Almost surely, 2^80955819 is an apocalyptic number.

80955819 is a deficient number, since it is larger than the sum of its proper divisors (61578261).

80955819 is a wasteful number, since it uses less digits than its factorization.

80955819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 80955819 is about 8997.5451652103. The cubic root of 80955819 is about 432.5961900836.

The spelling of 80955819 in words is "eighty million, nine hundred fifty-five thousand, eight hundred nineteen".