149571198 has 80 divisors (see below), whose sum is σ = 392493024. Its totient is φ = 41679360.

The previous prime is 149571181. The next prime is 149571259. The reversal of 149571198 is 891175941.

It is a happy number.

149571198 is a `hidden beast` number, since 1 + 495 + 71 + 1 + 98 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44886 + ... + 48102.

Almost surely, 2^149571198 is an apocalyptic number.

149571198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 149571198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196246512).

149571198 is an abundant number, since it is smaller than the sum of its proper divisors (242921826).

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

149571198 is a wasteful number, since it uses less digits than its factorization.

149571198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279 (or 3270 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 149571198 is about 12229.9304168094. The cubic root of 149571198 is about 530.8225012405.

It can be divided in two parts, 149571 and 198, that added together give a square (149769 = 387²).

The spelling of 149571198 in words is "one hundred forty-nine million, five hundred seventy-one thousand, one hundred ninety-eight".