138968734 has 8 divisors (see below), whose sum is σ = 210094848. Its totient is φ = 68937120.

The previous prime is 138968729. The next prime is 138968741. The reversal of 138968734 is 437869831.

It is a happy number.

138968734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273307 + ... + 273814.

It is an arithmetic number, because the mean of its divisors is an integer number (26261856).

Almost surely, 2^138968734 is an apocalyptic number.

138968734 is a deficient number, since it is larger than the sum of its proper divisors (71126114).

138968734 is a wasteful number, since it uses less digits than its factorization.

138968734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547250.

The product of its digits is 870912, while the sum is 49.

The square root of 138968734 is about 11788.5000742249. The cubic root of 138968734 is about 517.9713042446.

The spelling of 138968734 in words is "one hundred thirty-eight million, nine hundred sixty-eight thousand, seven hundred thirty-four".