158681896 has 8 divisors (see below), whose sum is σ = 297528570. Its totient is φ = 79340944.

The previous prime is 158681891. The next prime is 158681933. The reversal of 158681896 is 698186851.

It can be written as a sum of positive squares in only one way, i.e., 157502500 + 1179396 = 12550^2 + 1086^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (158681891) by changing a digit.

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 as a sum of consecutive naturals, namely, 9917611 + ... + 9917626.

Almost surely, 2^158681896 is an apocalyptic number.

It is an amenable number.

158681896 is a deficient number, since it is larger than the sum of its proper divisors (138846674).

158681896 is a wasteful number, since it uses less digits than its factorization.

158681896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19835243 (or 19835239 counting only the distinct ones).

The product of its digits is 829440, while the sum is 52.

The square root of 158681896 is about 12596.9002536338. The cubic root of 158681896 is about 541.3886254091.

The spelling of 158681896 in words is "one hundred fifty-eight million, six hundred eighty-one thousand, eight hundred ninety-six".