149153784 has 128 divisors (see below), whose sum is σ = 433097280. Its totient is φ = 42393600.

The previous prime is 149153779. The next prime is 149153791. The reversal of 149153784 is 487351941.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323314 + ... + 323774.

Almost surely, 2^149153784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149153784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216548640).

149153784 is an abundant number, since it is smaller than the sum of its proper divisors (283943496).

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

149153784 is a wasteful number, since it uses less digits than its factorization.

149153784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 557 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 149153784 is about 12212.8532292827. The cubic root of 149153784 is about 530.3282456980.

The spelling of 149153784 in words is "one hundred forty-nine million, one hundred fifty-three thousand, seven hundred eighty-four".