157923719 has 4 divisors (see below), whose sum is σ = 157998960. Its totient is φ = 157848480.

The previous prime is 157923697. The next prime is 157923721. The reversal of 157923719 is 917329751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157923719 - 2¹² = 157919623 is a prime.

It is a super-2 number, since 2×157923719² = 49879802045581922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157923719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157923739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34379 + ... + 38700.

It is an arithmetic number, because the mean of its divisors is an integer number (39499740).

Almost surely, 2^157923719 is an apocalyptic number.

157923719 is a deficient number, since it is larger than the sum of its proper divisors (75241).

157923719 is an equidigital number, since it uses as much as digits as its factorization.

157923719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75240.

The product of its digits is 119070, while the sum is 44.

The square root of 157923719 is about 12566.7704283957. The cubic root of 157923719 is about 540.5250026729.

The spelling of 157923719 in words is "one hundred fifty-seven million, nine hundred twenty-three thousand, seven hundred nineteen".