138261294 has 24 divisors (see below), whose sum is σ = 300265680. Its totient is φ = 45979488.

The previous prime is 138261293. The next prime is 138261301. The reversal of 138261294 is 492162831.

138261294 is a `hidden beast` number, since 1 + 38 + 2 + 612 + 9 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138261293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 847 + ... + 16650.

It is an arithmetic number, because the mean of its divisors is an integer number (12511070).

Almost surely, 2^138261294 is an apocalyptic number.

138261294 is an abundant number, since it is smaller than the sum of its proper divisors (162004386).

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

138261294 is a wasteful number, since it uses less digits than its factorization.

138261294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17944 (or 17941 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 138261294 is about 11758.4562762295. The cubic root of 138261294 is about 517.0908731638.

The spelling of 138261294 in words is "one hundred thirty-eight million, two hundred sixty-one thousand, two hundred ninety-four".