158639103 has 12 divisors (see below), whose sum is σ = 261880528. Its totient is φ = 90650880.

The previous prime is 158639099. The next prime is 158639111. The reversal of 158639103 is 301936851.

It is a happy number.

158639103 is a `hidden beast` number, since 1 + 5 + 8 + 639 + 10 + 3 = 666.

It is not a de Polignac number, because 158639103 - 2² = 158639099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158639153) 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, 1258978 + ... + 1259103.

Almost surely, 2^158639103 is an apocalyptic number.

158639103 is a deficient number, since it is larger than the sum of its proper divisors (103241425).

158639103 is a wasteful number, since it uses less digits than its factorization.

158639103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518094 (or 2518091 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 158639103 is about 12595.2015863185. The cubic root of 158639103 is about 541.3399541850.

The spelling of 158639103 in words is "one hundred fifty-eight million, six hundred thirty-nine thousand, one hundred three".