158649005 has 4 divisors (see below), whose sum is σ = 190378812. Its totient is φ = 126919200.

The previous prime is 158648999. The next prime is 158649011. The reversal of 158649005 is 500946851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500946851 = 439 ⋅1141109.

It is an interprime number because it is at equal distance from previous prime (158648999) and next prime (158649011).

It can be written as a sum of positive squares in 2 ways, for example, as 89908324 + 68740681 = 9482^2 + 8291^2 .

It is not a de Polignac number, because 158649005 - 2⁴ = 158648989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158649005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15864896 + ... + 15864905.

It is an arithmetic number, because the mean of its divisors is an integer number (47594703).

Almost surely, 2^158649005 is an apocalyptic number.

It is an amenable number.

158649005 is a deficient number, since it is larger than the sum of its proper divisors (31729807).

158649005 is an equidigital number, since it uses as much as digits as its factorization.

158649005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31729806.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 158649005 is about 12595.5946663903. The cubic root of 158649005 is about 541.3512171431.

The spelling of 158649005 in words is "one hundred fifty-eight million, six hundred forty-nine thousand, five".