157980733 has 2 divisors, whose sum is σ = 157980734. Its totient is φ = 157980732.

The previous prime is 157980689. The next prime is 157980773. The reversal of 157980733 is 337089751.

157980733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107599129 + 50381604 = 10373^2 + 7098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157980733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157980733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157980773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78990366 + 78990367.

It is an arithmetic number, because the mean of its divisors is an integer number (78990367).

Almost surely, 2^157980733 is an apocalyptic number.

It is an amenable number.

157980733 is a deficient number, since it is larger than the sum of its proper divisors (1).

157980733 is an equidigital number, since it uses as much as digits as its factorization.

157980733 is an evil number, because the sum of its binary digits is even.

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

The square root of 157980733 is about 12569.0386665011. The cubic root of 157980733 is about 540.5900420578.

The spelling of 157980733 in words is "one hundred fifty-seven million, nine hundred eighty thousand, seven hundred thirty-three".