158214919 has 4 divisors (see below), whose sum is σ = 166542040. Its totient is φ = 149887800.

The previous prime is 158214913. The next prime is 158214929. The reversal of 158214919 is 919412851.

158214919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 158214919 - 2⁵ = 158214887 is a prime.

It is a super-2 number, since 2×158214919² = 50063921188353122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158214913) 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, 4163532 + ... + 4163569.

It is an arithmetic number, because the mean of its divisors is an integer number (41635510).

Almost surely, 2^158214919 is an apocalyptic number.

158214919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

158214919 is a deficient number, since it is larger than the sum of its proper divisors (8327121).

158214919 is an equidigital number, since it uses as much as digits as its factorization.

158214919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8327120.

The product of its digits is 25920, while the sum is 40.

The square root of 158214919 is about 12578.3512035561. The cubic root of 158214919 is about 540.8570284455.

The spelling of 158214919 in words is "one hundred fifty-eight million, two hundred fourteen thousand, nine hundred nineteen".