157767923 has 2 divisors, whose sum is σ = 157767924. Its totient is φ = 157767922.

The previous prime is 157767913. The next prime is 157767943. The reversal of 157767923 is 329767751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157767923 - 2¹⁸ = 157505779 is a prime.

It is not a weakly prime, because it can be changed into another prime (157767913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78883961 + 78883962.

It is an arithmetic number, because the mean of its divisors is an integer number (78883962).

Almost surely, 2^157767923 is an apocalyptic number.

157767923 is a deficient number, since it is larger than the sum of its proper divisors (1).

157767923 is an equidigital number, since it uses as much as digits as its factorization.

157767923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 555660, while the sum is 47.

The square root of 157767923 is about 12560.5701701794. The cubic root of 157767923 is about 540.3471967014.

The spelling of 157767923 in words is "one hundred fifty-seven million, seven hundred sixty-seven thousand, nine hundred twenty-three".