157764193 has 2 divisors, whose sum is σ = 157764194. Its totient is φ = 157764192.

The previous prime is 157764161. The next prime is 157764209. The reversal of 157764193 is 391467751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106254864 + 51509329 = 10308^2 + 7177^2 .

It is a cyclic number.

It is not a de Polignac number, because 157764193 - 2⁵ = 157764161 is a prime.

It is not a weakly prime, because it can be changed into another prime (157764133) 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, 78882096 + 78882097.

It is an arithmetic number, because the mean of its divisors is an integer number (78882097).

Almost surely, 2^157764193 is an apocalyptic number.

It is an amenable number.

157764193 is a deficient number, since it is larger than the sum of its proper divisors (1).

157764193 is an equidigital number, since it uses as much as digits as its factorization.

157764193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 157764193 is about 12560.4216887810. The cubic root of 157764193 is about 540.3429383137.

The spelling of 157764193 in words is "one hundred fifty-seven million, seven hundred sixty-four thousand, one hundred ninety-three".