157718013 has 8 divisors (see below), whose sum is σ = 215974368. Its totient is φ = 102303504.

The previous prime is 157717999. The next prime is 157718017. The reversal of 157718013 is 310817751.

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

It is not a de Polignac number, because 157718013 - 2⁶ = 157717949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157718017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710331 + ... + 710552.

It is an arithmetic number, because the mean of its divisors is an integer number (26996796).

Almost surely, 2^157718013 is an apocalyptic number.

It is an amenable number.

157718013 is a deficient number, since it is larger than the sum of its proper divisors (58256355).

157718013 is a wasteful number, since it uses less digits than its factorization.

157718013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420923.

The product of its (nonzero) digits is 5880, while the sum is 33.

The square root of 157718013 is about 12558.5832401589. The cubic root of 157718013 is about 540.2902109457.

The spelling of 157718013 in words is "one hundred fifty-seven million, seven hundred eighteen thousand, thirteen".