149540188 has 18 divisors (see below), whose sum is σ = 299209848. Its totient is φ = 64060920.

The previous prime is 149540159. The next prime is 149540221. The reversal of 149540188 is 881045941.

It is a self number, because there is not a number n which added to its sum of digits gives 149540188.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63553 + ... + 65863.

Almost surely, 2^149540188 is an apocalyptic number.

It is an amenable number.

149540188 is an abundant number, since it is smaller than the sum of its proper divisors (149669660).

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

149540188 is an frugal number, since it uses more digits than its factorization.

149540188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633 (or 2320 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 149540188 is about 12228.6625597405. The cubic root of 149540188 is about 530.7858142676.

The spelling of 149540188 in words is "one hundred forty-nine million, five hundred forty thousand, one hundred eighty-eight".