138348892 has 12 divisors (see below), whose sum is σ = 264120696. Its totient is φ = 62885840.

The previous prime is 138348851. The next prime is 138348893. The reversal of 138348892 is 298843831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138348893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1572103 + ... + 1572190.

It is an arithmetic number, because the mean of its divisors is an integer number (22010058).

Almost surely, 2^138348892 is an apocalyptic number.

It is an amenable number.

138348892 is a deficient number, since it is larger than the sum of its proper divisors (125771804).

138348892 is a wasteful number, since it uses less digits than its factorization.

138348892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144308 (or 3144306 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 138348892 is about 11762.1805801475. The cubic root of 138348892 is about 517.2000542712.

It can be divided in two parts, 138 and 348892, that added together give a triangular number (349030 = T₈₃₅).

The spelling of 138348892 in words is "one hundred thirty-eight million, three hundred forty-eight thousand, eight hundred ninety-two".