138891482 has 16 divisors (see below), whose sum is σ = 223443360. Its totient is φ = 64548432.

The previous prime is 138891481. The next prime is 138891491. The reversal of 138891482 is 284198831.

It is not an unprimeable number, because it can be changed into a prime (138891481) 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, 32468 + ... + 36495.

It is an arithmetic number, because the mean of its divisors is an integer number (13965210).

Almost surely, 2^138891482 is an apocalyptic number.

138891482 is a deficient number, since it is larger than the sum of its proper divisors (84551878).

138891482 is a wasteful number, since it uses less digits than its factorization.

138891482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69037.

The product of its digits is 110592, while the sum is 44.

The square root of 138891482 is about 11785.2230356493. The cubic root of 138891482 is about 517.8753072652.

The spelling of 138891482 in words is "one hundred thirty-eight million, eight hundred ninety-one thousand, four hundred eighty-two".