80158691 has 2 divisors, whose sum is σ = 80158692. Its totient is φ = 80158690.

The previous prime is 80158633. The next prime is 80158699. The reversal of 80158691 is 19685108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80158691 - 2⁶ = 80158627 is a prime.

It is not a weakly prime, because it can be changed into another prime (80158699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40079345 + 40079346.

It is an arithmetic number, because the mean of its divisors is an integer number (40079346).

Almost surely, 2^80158691 is an apocalyptic number.

80158691 is a deficient number, since it is larger than the sum of its proper divisors (1).

80158691 is an equidigital number, since it uses as much as digits as its factorization.

80158691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 80158691 is about 8953.1386116825. The cubic root of 80158691 is about 431.1716576586.

The spelling of 80158691 in words is "eighty million, one hundred fifty-eight thousand, six hundred ninety-one".