157016749 has 2 divisors, whose sum is σ = 157016750. Its totient is φ = 157016748.

The previous prime is 157016723. The next prime is 157016773. The reversal of 157016749 is 947610751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127531849 + 29484900 = 11293^2 + 5430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157016749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157016149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78508374 + 78508375.

It is an arithmetic number, because the mean of its divisors is an integer number (78508375).

Almost surely, 2^157016749 is an apocalyptic number.

It is an amenable number.

157016749 is a deficient number, since it is larger than the sum of its proper divisors (1).

157016749 is an equidigital number, since it uses as much as digits as its factorization.

157016749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 157016749 is about 12530.6324261787. The cubic root of 157016749 is about 539.4882543239.

The spelling of 157016749 in words is "one hundred fifty-seven million, sixteen thousand, seven hundred forty-nine".