158641407 has 24 divisors (see below), whose sum is σ = 232845600. Its totient is φ = 104068800.

The previous prime is 158641381. The next prime is 158641421. The reversal of 158641407 is 704146851.

It is a happy number.

158641407 is a `hidden beast` number, since 1 + 5 + 8 + 641 + 4 + 0 + 7 = 666.

It is not a de Polignac number, because 158641407 - 2¹⁶ = 158575871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158646407) 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, 180453 + ... + 181329.

It is an arithmetic number, because the mean of its divisors is an integer number (9701900).

Almost surely, 2^158641407 is an apocalyptic number.

158641407 is a deficient number, since it is larger than the sum of its proper divisors (74204193).

158641407 is a wasteful number, since it uses less digits than its factorization.

158641407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 158641407 is about 12595.2930493895. The cubic root of 158641407 is about 541.3425748949.

It can be divided in two parts, 15864 and 1407, that added together give a palindrome (17271).

The spelling of 158641407 in words is "one hundred fifty-eight million, six hundred forty-one thousand, four hundred seven".