80918503 has 2 divisors, whose sum is σ = 80918504. Its totient is φ = 80918502.

The previous prime is 80918489. The next prime is 80918507. The reversal of 80918503 is 30581908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80918503 - 2⁵ = 80918471 is a prime.

It is a super-2 number, since 2×80918503² = 13095608255522018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80918507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40459251 + 40459252.

It is an arithmetic number, because the mean of its divisors is an integer number (40459252).

Almost surely, 2^80918503 is an apocalyptic number.

80918503 is a deficient number, since it is larger than the sum of its proper divisors (1).

80918503 is an equidigital number, since it uses as much as digits as its factorization.

80918503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 80918503 is about 8995.4712494677. The cubic root of 80918503 is about 432.5297125054.

The spelling of 80918503 in words is "eighty million, nine hundred eighteen thousand, five hundred three".