158196634 has 4 divisors (see below), whose sum is σ = 237294954. Its totient is φ = 79098316.

The previous prime is 158196601. The next prime is 158196637. The reversal of 158196634 is 436691851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436691851 = 2729 ⋅160019.

It can be written as a sum of positive squares in only one way, i.e., 114597025 + 43599609 = 10705^2 + 6603^2 .

It is not an unprimeable number, because it can be changed into a prime (158196637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39549157 + ... + 39549160.

Almost surely, 2^158196634 is an apocalyptic number.

158196634 is a deficient number, since it is larger than the sum of its proper divisors (79098320).

158196634 is an equidigital number, since it uses as much as digits as its factorization.

158196634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79098319.

The product of its digits is 155520, while the sum is 43.

The square root of 158196634 is about 12577.6243384830. The cubic root of 158196634 is about 540.8361919112.

The spelling of 158196634 in words is "one hundred fifty-eight million, one hundred ninety-six thousand, six hundred thirty-four".