157189 has 2 divisors, whose sum is σ = 157190. Its totient is φ = 157188.

The previous prime is 157181. The next prime is 157207. The reversal of 157189 is 981751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134689 + 22500 = 367^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 157189 - 2³ = 157181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78594 + 78595.

It is an arithmetic number, because the mean of its divisors is an integer number (78595).

2¹⁵⁷¹⁸⁹ is an apocalyptic number.

It is an amenable number.

157189 is a deficient number, since it is larger than the sum of its proper divisors (1).

157189 is an equidigital number, since it uses as much as digits as its factorization.

157189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 31.

The square root of 157189 is about 396.4706798743. The cubic root of 157189 is about 53.9685459254.

The spelling of 157189 in words is "one hundred fifty-seven thousand, one hundred eighty-nine".