158631268 has 6 divisors (see below), whose sum is σ = 277604726. Its totient is φ = 79315632.

The previous prime is 158631259. The next prime is 158631269. The reversal of 158631268 is 862136851.

It can be written as a sum of positive squares in only one way, i.e., 108618084 + 50013184 = 10422^2 + 7072^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 158631268.

It is not an unprimeable number, because it can be changed into a prime (158631269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19828905 + ... + 19828912.

Almost surely, 2^158631268 is an apocalyptic number.

It is an amenable number.

158631268 is a deficient number, since it is larger than the sum of its proper divisors (118973458).

158631268 is a wasteful number, since it uses less digits than its factorization.

158631268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39657821 (or 39657819 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 158631268 is about 12594.8905513307. The cubic root of 158631268 is about 541.3310419889.

The spelling of 158631268 in words is "one hundred fifty-eight million, six hundred thirty-one thousand, two hundred sixty-eight".