157397349 has 32 divisors (see below), whose sum is σ = 232012800. Its totient is φ = 94469760.

The previous prime is 157397221. The next prime is 157397369. The reversal of 157397349 is 943793751.

It is a happy number.

It is not a de Polignac number, because 157397349 - 2⁷ = 157397221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157397298 and 157397307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157397369) 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 in 31 ways as a sum of consecutive naturals, for example, 276337 + ... + 276905.

It is an arithmetic number, because the mean of its divisors is an integer number (7250400).

Almost surely, 2^157397349 is an apocalyptic number.

157397349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

157397349 is a deficient number, since it is larger than the sum of its proper divisors (74615451).

157397349 is a wasteful number, since it uses less digits than its factorization.

157397349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825.

The product of its digits is 714420, while the sum is 48.

The square root of 157397349 is about 12545.8100176912. The cubic root of 157397349 is about 539.9237992613.

The spelling of 157397349 in words is "one hundred fifty-seven million, three hundred ninety-seven thousand, three hundred forty-nine".