158449864 has 8 divisors (see below), whose sum is σ = 297093510. Its totient is φ = 79224928.

The previous prime is 158449813. The next prime is 158449867. The reversal of 158449864 is 468944851.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 100841764 + 57608100 = 10042^2 + 7590^2 .

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 (158449867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9903109 + ... + 9903124.

Almost surely, 2^158449864 is an apocalyptic number.

It is an amenable number.

158449864 is a deficient number, since it is larger than the sum of its proper divisors (138643646).

158449864 is a wasteful number, since it uses less digits than its factorization.

158449864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19806239 (or 19806235 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 158449864 is about 12587.6869996040. The cubic root of 158449864 is about 541.1246155307.

The spelling of 158449864 in words is "one hundred fifty-eight million, four hundred forty-nine thousand, eight hundred sixty-four".