145972198 has 8 divisors (see below), whose sum is σ = 219438792. Its totient is φ = 72825936.

The previous prime is 145972181. The next prime is 145972201. The reversal of 145972198 is 891279541.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 78940 + ... + 80767.

It is an arithmetic number, because the mean of its divisors is an integer number (27429849).

Almost surely, 2^145972198 is an apocalyptic number.

145972198 is a deficient number, since it is larger than the sum of its proper divisors (73466594).

145972198 is a wasteful number, since it uses less digits than its factorization.

145972198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160166.

The product of its digits is 181440, while the sum is 46.

The square root of 145972198 is about 12081.8954638749. The cubic root of 145972198 is about 526.5303171219.

The spelling of 145972198 in words is "one hundred forty-five million, nine hundred seventy-two thousand, one hundred ninety-eight".