158798961 has 10 divisors (see below), whose sum is σ = 237218322. Its totient is φ = 105865920.

The previous prime is 158798951. The next prime is 158798977. The reversal of 158798961 is 169897851.

158798961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 156725361 + 2073600 = 12519^2 + 1440^2 .

It is not a de Polignac number, because 158798961 - 2⁹ = 158798449 is a prime.

It is a super-3 number, since 3×158798961³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 158798898 and 158798907.

It is not an unprimeable number, because it can be changed into a prime (158798951) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 980160 + ... + 980321.

Almost surely, 2^158798961 is an apocalyptic number.

It is an amenable number.

158798961 is a deficient number, since it is larger than the sum of its proper divisors (78419361).

158798961 is an equidigital number, since it uses as much as digits as its factorization.

158798961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960493 (or 1960484 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 54.

The square root of 158798961 is about 12601.5459765856. The cubic root of 158798961 is about 541.5217262482.

The spelling of 158798961 in words is "one hundred fifty-eight million, seven hundred ninety-eight thousand, nine hundred sixty-one".