149661198 has 24 divisors (see below), whose sum is σ = 324605736. Its totient is φ = 49834800.

The previous prime is 149661173. The next prime is 149661209. The reversal of 149661198 is 891166941.

149661198 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, 15828 + ... + 23448.

It is an arithmetic number, because the mean of its divisors is an integer number (13525239).

Almost surely, 2^149661198 is an apocalyptic number.

149661198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

149661198 is an abundant number, since it is smaller than the sum of its proper divisors (174944538).

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

149661198 is a wasteful number, since it uses less digits than its factorization.

149661198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8720 (or 8717 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 149661198 is about 12233.6093611003. The cubic root of 149661198 is about 530.9289487535.

The spelling of 149661198 in words is "one hundred forty-nine million, six hundred sixty-one thousand, one hundred ninety-eight".