145449198 has 24 divisors (see below), whose sum is σ = 315432936. Its totient is φ = 48438000.

The previous prime is 145449173. The next prime is 145449203. The reversal of 145449198 is 891944541.

It is a happy number.

145449198 is a `hidden beast` number, since 1 + 454 + 4 + 9 + 198 = 666.

145449198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20313 + ... + 26523.

It is an arithmetic number, because the mean of its divisors is an integer number (13143039).

Almost surely, 2^145449198 is an apocalyptic number.

145449198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145449198 is an abundant number, since it is smaller than the sum of its proper divisors (169983738).

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

145449198 is a wasteful number, since it uses less digits than its factorization.

145449198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7520 (or 7517 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 145449198 is about 12060.2320873190. The cubic root of 145449198 is about 525.9007340135.

The spelling of 145449198 in words is "one hundred forty-five million, four hundred forty-nine thousand, one hundred ninety-eight".