138851734 has 16 divisors (see below), whose sum is σ = 250560000. Its totient is φ = 56375784.

The previous prime is 138851731. The next prime is 138851737. The reversal of 138851734 is 437158831.

It is an interprime number because it is at equal distance from previous prime (138851731) and next prime (138851737).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138851731) 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 7 ways as a sum of consecutive naturals, for example, 260734 + ... + 261265.

It is an arithmetic number, because the mean of its divisors is an integer number (15660000).

Almost surely, 2^138851734 is an apocalyptic number.

138851734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138851734 is a deficient number, since it is larger than the sum of its proper divisors (111708266).

138851734 is a wasteful number, since it uses less digits than its factorization.

138851734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522027.

The product of its digits is 80640, while the sum is 40.

The square root of 138851734 is about 11783.5365659041. The cubic root of 138851734 is about 517.8259006557.

The spelling of 138851734 in words is "one hundred thirty-eight million, eight hundred fifty-one thousand, seven hundred thirty-four".