138149649582 has 32 divisors (see below), whose sum is σ = 315820787712. Its totient is φ = 39465058464.

The previous prime is 138149649571. The next prime is 138149649593. The reversal of 138149649582 is 285946941831.

It is an interprime number because it is at equal distance from previous prime (138149649571) and next prime (138149649593).

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 15 ways as a sum of consecutive naturals, for example, 9603 + ... + 525729.

It is an arithmetic number, because the mean of its divisors is an integer number (9869399616).

Almost surely, 2^138149649582 is an apocalyptic number.

138149649582 is an abundant number, since it is smaller than the sum of its proper divisors (177671138130).

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

138149649582 is a wasteful number, since it uses less digits than its factorization.

138149649582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522512.

The product of its digits is 14929920, while the sum is 60.

The spelling of 138149649582 in words is "one hundred thirty-eight billion, one hundred forty-nine million, six hundred forty-nine thousand, five hundred eighty-two".