157719149 has 24 divisors (see below), whose sum is σ = 195222528. Its totient is φ = 124750080.

The previous prime is 157719131. The next prime is 157719157. The reversal of 157719149 is 941917751.

It is not a de Polignac number, because 157719149 - 2²⁰ = 156670573 is a prime.

It is a super-2 number, since 2×157719149² = 49750659922568402, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157719179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106484 + ... + 107954.

It is an arithmetic number, because the mean of its divisors is an integer number (8134272).

Almost surely, 2^157719149 is an apocalyptic number.

It is an amenable number.

157719149 is a deficient number, since it is larger than the sum of its proper divisors (37503379).

157719149 is a wasteful number, since it uses less digits than its factorization.

157719149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565 (or 1548 counting only the distinct ones).

The product of its digits is 79380, while the sum is 44.

The square root of 157719149 is about 12558.6284681091. The cubic root of 157719149 is about 540.2915081304.

The spelling of 157719149 in words is "one hundred fifty-seven million, seven hundred nineteen thousand, one hundred forty-nine".