149454930638 has 12 divisors (see below), whose sum is σ = 242753719248. Its totient is φ = 68979198600.

The previous prime is 149454930631. The next prime is 149454930673. The reversal of 149454930638 is 836039454941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149454930631) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 221086838 + ... + 221087513.

It is an arithmetic number, because the mean of its divisors is an integer number (20229476604).

Almost surely, 2^149454930638 is an apocalyptic number.

149454930638 is a deficient number, since it is larger than the sum of its proper divisors (93298788610).

149454930638 is a wasteful number, since it uses less digits than its factorization.

149454930638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442174379 (or 442174366 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 149454930638 in words is "one hundred forty-nine billion, four hundred fifty-four million, nine hundred thirty thousand, six hundred thirty-eight".