145222194 has 32 divisors (see below), whose sum is σ = 331188480. Its totient is φ = 42054912.

The previous prime is 145222183. The next prime is 145222201. The reversal of 145222194 is 491222541.

145222194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53434 + ... + 56085.

It is an arithmetic number, because the mean of its divisors is an integer number (10349640).

Almost surely, 2^145222194 is an apocalyptic number.

145222194 is an abundant number, since it is smaller than the sum of its proper divisors (185966286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145222194 is a wasteful number, since it uses less digits than its factorization.

145222194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109554.

The product of its digits is 5760, while the sum is 30.

The square root of 145222194 is about 12050.8171507164. The cubic root of 145222194 is about 525.6269987336.

The spelling of 145222194 in words is "one hundred forty-five million, two hundred twenty-two thousand, one hundred ninety-four".