157345739 has 4 divisors (see below), whose sum is σ = 162421440. Its totient is φ = 152270040.

The previous prime is 157345703. The next prime is 157345763. The reversal of 157345739 is 937543751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937543751 = 2251 ⋅416501.

It is a cyclic number.

It is not a de Polignac number, because 157345739 - 2⁸ = 157345483 is a prime.

It is a super-2 number, since 2×157345739² = 49515363162912242, 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 157345739.

It is not an unprimeable number, because it can be changed into a prime (157345339) 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, 2537804 + ... + 2537865.

It is an arithmetic number, because the mean of its divisors is an integer number (40605360).

Almost surely, 2^157345739 is an apocalyptic number.

157345739 is a deficient number, since it is larger than the sum of its proper divisors (5075701).

157345739 is an equidigital number, since it uses as much as digits as its factorization.

157345739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075700.

The product of its digits is 396900, while the sum is 44.

The square root of 157345739 is about 12543.7529870450. The cubic root of 157345739 is about 539.8647798143.

The spelling of 157345739 in words is "one hundred fifty-seven million, three hundred forty-five thousand, seven hundred thirty-nine".