138737834 has 16 divisors (see below), whose sum is σ = 217852416. Its totient is φ = 66183600.

The previous prime is 138737821. The next prime is 138737873. The reversal of 138737834 is 438737831.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11357 + ... + 20160.

It is an arithmetic number, because the mean of its divisors is an integer number (13615776).

Almost surely, 2^138737834 is an apocalyptic number.

138737834 is a deficient number, since it is larger than the sum of its proper divisors (79114582).

138737834 is a wasteful number, since it uses less digits than its factorization.

138737834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31621.

The product of its digits is 338688, while the sum is 44.

The square root of 138737834 is about 11778.7025601294. The cubic root of 138737834 is about 517.6842711566.

The spelling of 138737834 in words is "one hundred thirty-eight million, seven hundred thirty-seven thousand, eight hundred thirty-four".