158474493 has 12 divisors (see below), whose sum is σ = 242372988. Its totient is φ = 99434880.

The previous prime is 158474489. The next prime is 158474507. The reversal of 158474493 is 394474851.

158474493 is a `hidden beast` number, since 15 + 84 + 74 + 493 = 666.

158474493 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 2 ways, for example, as 44796249 + 113678244 = 6693^2 + 10662^2 .

It is not a de Polignac number, because 158474493 - 2² = 158474489 is a prime.

It is a super-2 number, since 2×158474493² = 50228329863214098, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158474453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 517738 + ... + 518043.

It is an arithmetic number, because the mean of its divisors is an integer number (20197749).

Almost surely, 2^158474493 is an apocalyptic number.

It is an amenable number.

158474493 is a deficient number, since it is larger than the sum of its proper divisors (83898495).

158474493 is a wasteful number, since it uses less digits than its factorization.

158474493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035804 (or 1035801 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 158474493 is about 12588.6652588747. The cubic root of 158474493 is about 541.1526510396.

The spelling of 158474493 in words is "one hundred fifty-eight million, four hundred seventy-four thousand, four hundred ninety-three".