15916049 has 2 divisors, whose sum is σ = 15916050. Its totient is φ = 15916048.

The previous prime is 15916039. The next prime is 15916067. The reversal of 15916049 is 94061951.

15916049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12475024 + 3441025 = 3532^2 + 1855^2 .

It is a cyclic number.

It is not a de Polignac number, because 15916049 - 2¹² = 15911953 is a prime.

It is not a weakly prime, because it can be changed into another prime (15916009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7958024 + 7958025.

It is an arithmetic number, because the mean of its divisors is an integer number (7958025).

Almost surely, 2^15916049 is an apocalyptic number.

It is an amenable number.

15916049 is a deficient number, since it is larger than the sum of its proper divisors (1).

15916049 is an equidigital number, since it uses as much as digits as its factorization.

15916049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 15916049 is about 3989.4923235921. The cubic root of 15916049 is about 251.5427217891.

The spelling of 15916049 in words is "fifteen million, nine hundred sixteen thousand, forty-nine".