80918867 has 2 divisors, whose sum is σ = 80918868. Its totient is φ = 80918866.

The previous prime is 80918839. The next prime is 80918881. The reversal of 80918867 is 76881908.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80918867 is a prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (80918837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40459433 + 40459434.

It is an arithmetic number, because the mean of its divisors is an integer number (40459434).

Almost surely, 2^80918867 is an apocalyptic number.

80918867 is a deficient number, since it is larger than the sum of its proper divisors (1).

80918867 is an equidigital number, since it uses as much as digits as its factorization.

80918867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 80918867 is about 8995.4914818480. The cubic root of 80918867 is about 432.5303610615.

The spelling of 80918867 in words is "eighty million, nine hundred eighteen thousand, eight hundred sixty-seven".