157889041 has 2 divisors, whose sum is σ = 157889042. Its totient is φ = 157889040.

The previous prime is 157889033. The next prime is 157889057. The reversal of 157889041 is 140988751.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137827600 + 20061441 = 11740^2 + 4479^2 .

It is a cyclic number.

It is not a de Polignac number, because 157889041 - 2³ = 157889033 is a prime.

It is not a weakly prime, because it can be changed into another prime (157881041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78944520 + 78944521.

It is an arithmetic number, because the mean of its divisors is an integer number (78944521).

Almost surely, 2^157889041 is an apocalyptic number.

It is an amenable number.

157889041 is a deficient number, since it is larger than the sum of its proper divisors (1).

157889041 is an equidigital number, since it uses as much as digits as its factorization.

157889041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 157889041 is about 12565.3906027628. The cubic root of 157889041 is about 540.4854356838.

The spelling of 157889041 in words is "one hundred fifty-seven million, eight hundred eighty-nine thousand, forty-one".