149999634 has 16 divisors (see below), whose sum is σ = 333332640. Its totient is φ = 49999860.

The previous prime is 149999627. The next prime is 149999639. The reversal of 149999634 is 436999941.

149999634 is a `hidden beast` number, since 1 + 499 + 99 + 63 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 2777771 = 149999634 / (1 + 4 + 9 + 9 + 9 + 9 + 6 + 3 + 4).

It is not an unprimeable number, because it can be changed into a prime (149999639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1388832 + ... + 1388939.

It is an arithmetic number, because the mean of its divisors is an integer number (20833290).

Almost surely, 2^149999634 is an apocalyptic number.

149999634 is an abundant number, since it is smaller than the sum of its proper divisors (183333006).

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

149999634 is a wasteful number, since it uses less digits than its factorization.

149999634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777782 (or 2777776 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 149999634 is about 12247.4337720193. The cubic root of 149999634 is about 531.3288524431.

The spelling of 149999634 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, six hundred thirty-four".