80615149 has 2 divisors, whose sum is σ = 80615150. Its totient is φ = 80615148.

The previous prime is 80615147. The next prime is 80615203. The reversal of 80615149 is 94151608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 33143049 = 6890^2 + 5757^2 .

It is a cyclic number.

It is not a de Polignac number, because 80615149 - 2¹ = 80615147 is a prime.

Together with 80615147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80615147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40307574 + 40307575.

It is an arithmetic number, because the mean of its divisors is an integer number (40307575).

Almost surely, 2^80615149 is an apocalyptic number.

It is an amenable number.

80615149 is a deficient number, since it is larger than the sum of its proper divisors (1).

80615149 is an equidigital number, since it uses as much as digits as its factorization.

80615149 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 80615149 is about 8978.5939322368. The cubic root of 80615149 is about 431.9885345751.

The spelling of 80615149 in words is "eighty million, six hundred fifteen thousand, one hundred forty-nine".