149198418 has 24 divisors (see below), whose sum is σ = 323552268. Its totient is φ = 49688352.

The previous prime is 149198407. The next prime is 149198453. The reversal of 149198418 is 814891941.

149198418 is a `hidden beast` number, since 1 + 49 + 198 + 418 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 144648729 + 4549689 = 12027^2 + 2133^2 .

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, 21696 + ... + 27732.

Almost surely, 2^149198418 is an apocalyptic number.

149198418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

149198418 is an abundant number, since it is smaller than the sum of its proper divisors (174353850).

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

149198418 is a wasteful number, since it uses less digits than its factorization.

149198418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418 (or 7415 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 149198418 is about 12214.6804297124. The cubic root of 149198418 is about 530.3811403448.

The spelling of 149198418 in words is "one hundred forty-nine million, one hundred ninety-eight thousand, four hundred eighteen".