158796139 has 4 divisors (see below), whose sum is σ = 160368480. Its totient is φ = 157223800.

The previous prime is 158796137. The next prime is 158796149. The reversal of 158796139 is 931697851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158796139 - 2¹ = 158796137 is a prime.

It is a super-2 number, since 2×158796139² = 50432427522614642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158796092 and 158796101.

It is not an unprimeable number, because it can be changed into a prime (158796137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786019 + ... + 786220.

It is an arithmetic number, because the mean of its divisors is an integer number (40092120).

Almost surely, 2^158796139 is an apocalyptic number.

158796139 is a deficient number, since it is larger than the sum of its proper divisors (1572341).

158796139 is a wasteful number, since it uses less digits than its factorization.

158796139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572340.

The product of its digits is 408240, while the sum is 49.

The square root of 158796139 is about 12601.4340056995. The cubic root of 158796139 is about 541.5185184536.

The spelling of 158796139 in words is "one hundred fifty-eight million, seven hundred ninety-six thousand, one hundred thirty-nine".