157093649 has 2 divisors, whose sum is σ = 157093650. Its totient is φ = 157093648.

The previous prime is 157093639. The next prime is 157093661. The reversal of 157093649 is 946390751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101143249 + 55950400 = 10057^2 + 7480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157093649 is a prime.

It is a super-2 number, since 2×157093649² = 49356829112270402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157093619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78546824 + 78546825.

It is an arithmetic number, because the mean of its divisors is an integer number (78546825).

Almost surely, 2^157093649 is an apocalyptic number.

It is an amenable number.

157093649 is a deficient number, since it is larger than the sum of its proper divisors (1).

157093649 is an equidigital number, since it uses as much as digits as its factorization.

157093649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 157093649 is about 12533.7005309685. The cubic root of 157093649 is about 539.5763126066.

The spelling of 157093649 in words is "one hundred fifty-seven million, ninety-three thousand, six hundred forty-nine".