138746501 has 16 divisors (see below), whose sum is σ = 145504128. Its totient is φ = 132192000.

The previous prime is 138746497. The next prime is 138746507. The reversal of 138746501 is 105647831.

It is a cyclic number.

It is not a de Polignac number, because 138746501 - 2² = 138746497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138746507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451790 + ... + 452096.

It is an arithmetic number, because the mean of its divisors is an integer number (9094008).

Almost surely, 2^138746501 is an apocalyptic number.

It is an amenable number.

138746501 is a deficient number, since it is larger than the sum of its proper divisors (6757627).

138746501 is a wasteful number, since it uses less digits than its factorization.

138746501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 138746501 is about 11779.0704641750. The cubic root of 138746501 is about 517.6950509033.

The spelling of 138746501 in words is "one hundred thirty-eight million, seven hundred forty-six thousand, five hundred one".