157882789 has 2 divisors, whose sum is σ = 157882790. Its totient is φ = 157882788.

The previous prime is 157882693. The next prime is 157882793. The reversal of 157882789 is 987288751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134165889 + 23716900 = 11583^2 + 4870^2 .

It is a cyclic number.

It is not a de Polignac number, because 157882789 - 2⁷ = 157882661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157882489) 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, 78941394 + 78941395.

It is an arithmetic number, because the mean of its divisors is an integer number (78941395).

Almost surely, 2^157882789 is an apocalyptic number.

It is an amenable number.

157882789 is a deficient number, since it is larger than the sum of its proper divisors (1).

157882789 is an equidigital number, since it uses as much as digits as its factorization.

157882789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 55.

The square root of 157882789 is about 12565.1418217225. The cubic root of 157882789 is about 540.4783016452.

The spelling of 157882789 in words is "one hundred fifty-seven million, eight hundred eighty-two thousand, seven hundred eighty-nine".