158881222 has 4 divisors (see below), whose sum is σ = 238321836. Its totient is φ = 79440610.

The previous prime is 158881213. The next prime is 158881241. The reversal of 158881222 is 222188851.

158881222 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 super-3 number, since 3×158881222³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39720304 + ... + 39720307.

It is an arithmetic number, because the mean of its divisors is an integer number (59580459).

Almost surely, 2^158881222 is an apocalyptic number.

158881222 is a deficient number, since it is larger than the sum of its proper divisors (79440614).

158881222 is an equidigital number, since it uses as much as digits as its factorization.

158881222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79440613.

The product of its digits is 20480, while the sum is 37.

The square root of 158881222 is about 12604.8094789251. The cubic root of 158881222 is about 541.6152164254.

The spelling of 158881222 in words is "one hundred fifty-eight million, eight hundred eighty-one thousand, two hundred twenty-two".