157934819 has 8 divisors (see below), whose sum is σ = 181079808. Its totient is φ = 134935560.

The previous prime is 157934809. The next prime is 157934831. The reversal of 157934819 is 918439751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157934819 is a prime.

It is a super-2 number, since 2×157934819² = 49886814105125522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157934809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34097 + ... + 38450.

It is an arithmetic number, because the mean of its divisors is an integer number (22634976).

Almost surely, 2^157934819 is an apocalyptic number.

157934819 is a deficient number, since it is larger than the sum of its proper divisors (23144989).

157934819 is an equidigital number, since it uses as much as digits as its factorization.

157934819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72865.

The product of its digits is 272160, while the sum is 47.

The square root of 157934819 is about 12567.2120615513. The cubic root of 157934819 is about 540.5376663542.

The spelling of 157934819 in words is "one hundred fifty-seven million, nine hundred thirty-four thousand, eight hundred nineteen".