149603638 has 32 divisors (see below), whose sum is σ = 250278336. Its totient is φ = 66705408.

The previous prime is 149603609. The next prime is 149603647. The reversal of 149603638 is 836306941.

149603638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 149603638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87520 + ... + 89212.

It is an arithmetic number, because the mean of its divisors is an integer number (7821198).

Almost surely, 2^149603638 is an apocalyptic number.

149603638 is a deficient number, since it is larger than the sum of its proper divisors (100674698).

149603638 is a wasteful number, since it uses less digits than its factorization.

With its successor (149603639) it forms an eRAP, since the sums of their prime factors are consecutive (1848 and 1849).

149603638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 149603638 is about 12231.2565993850. The cubic root of 149603638 is about 530.8608745758.

The spelling of 149603638 in words is "one hundred forty-nine million, six hundred three thousand, six hundred thirty-eight".