157847919 has 16 divisors (see below), whose sum is σ = 221356032. Its totient is φ = 99858528.

The previous prime is 157847917. The next prime is 157847927. The reversal of 157847919 is 919748751.

It is a happy number.

157847919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157847919 - 2¹ = 157847917 is a prime.

It is a super-2 number, since 2×157847919² = 49831931065261122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157847917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244 + ... + 17769.

It is an arithmetic number, because the mean of its divisors is an integer number (13834752).

Almost surely, 2^157847919 is an apocalyptic number.

157847919 is a deficient number, since it is larger than the sum of its proper divisors (63508113).

157847919 is a wasteful number, since it uses less digits than its factorization.

157847919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18166.

The product of its digits is 635040, while the sum is 51.

The square root of 157847919 is about 12563.7541762007. The cubic root of 157847919 is about 540.4385086947.

It can be divided in two parts, 157847 and 919, that added together give a triangular number (158766 = T₅₆₃).

The spelling of 157847919 in words is "one hundred fifty-seven million, eight hundred forty-seven thousand, nine hundred nineteen".