158148685 has 24 divisors (see below), whose sum is σ = 205273656. Its totient is φ = 116881920.

The previous prime is 158148677. The next prime is 158148691. The reversal of 158148685 is 586841851.

It can be written as a sum of positive squares in 4 ways, for example, as 9357481 + 148791204 = 3059^2 + 12198^2 .

It is not a de Polignac number, because 158148685 - 2³ = 158148677 is a prime.

It is a super-2 number, since 2×158148685² = 50022013134458450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72937 + ... + 75073.

It is an arithmetic number, because the mean of its divisors is an integer number (8553069).

Almost surely, 2^158148685 is an apocalyptic number.

It is an amenable number.

158148685 is a deficient number, since it is larger than the sum of its proper divisors (47124971).

158148685 is a wasteful number, since it uses less digits than its factorization.

158148685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221 (or 2202 counting only the distinct ones).

The product of its digits is 307200, while the sum is 46.

The square root of 158148685 is about 12575.7180709493. The cubic root of 158148685 is about 540.7815443620.

The spelling of 158148685 in words is "one hundred fifty-eight million, one hundred forty-eight thousand, six hundred eighty-five".