157158892249 has 4 divisors (see below), whose sum is σ = 157290627636. Its totient is φ = 157027156864.

The previous prime is 157158892243. The next prime is 157158892259. The reversal of 157158892249 is 942298851751.

157158892249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 942298851751 = 577 ⋅1633100263.

It can be written as a sum of positive squares in 2 ways, for example, as 118140001225 + 39018891024 = 343715^2 + 197532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157158892249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157158892243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65865904 + ... + 65868289.

It is an arithmetic number, because the mean of its divisors is an integer number (39322656909).

Almost surely, 2^157158892249 is an apocalyptic number.

It is an amenable number.

157158892249 is a deficient number, since it is larger than the sum of its proper divisors (131735387).

157158892249 is a wasteful number, since it uses less digits than its factorization.

157158892249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131735386.

The product of its digits is 14515200, while the sum is 61.

The spelling of 157158892249 in words is "one hundred fifty-seven billion, one hundred fifty-eight million, eight hundred ninety-two thousand, two hundred forty-nine".