158409022 has 4 divisors (see below), whose sum is σ = 237613536. Its totient is φ = 79204510.

The previous prime is 158409001. The next prime is 158409067. The reversal of 158409022 is 220904851.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39602254 + ... + 39602257.

It is an arithmetic number, because the mean of its divisors is an integer number (59403384).

Almost surely, 2^158409022 is an apocalyptic number.

158409022 is a deficient number, since it is larger than the sum of its proper divisors (79204514).

158409022 is an equidigital number, since it uses as much as digits as its factorization.

158409022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79204513.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 158409022 is about 12586.0645954166. The cubic root of 158409022 is about 541.0781181505.

The spelling of 158409022 in words is "one hundred fifty-eight million, four hundred nine thousand, twenty-two".