138106453 has 12 divisors (see below), whose sum is σ = 148041540. Its totient is φ = 128801792.

The previous prime is 138106447. The next prime is 138106469. The reversal of 138106453 is 354601831.

138106453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 14607684 + 123498769 = 3822^2 + 11113^2 .

It is a de Polignac number, because none of the positive numbers 2^k-138106453 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 (138106253) 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, 30543 + ... + 34771.

It is an arithmetic number, because the mean of its divisors is an integer number (12336795).

Almost surely, 2^138106453 is an apocalyptic number.

It is an amenable number.

138106453 is a deficient number, since it is larger than the sum of its proper divisors (9935087).

138106453 is a wasteful number, since it uses less digits than its factorization.

138106453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376 (or 4359 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 138106453 is about 11751.8701915908. The cubic root of 138106453 is about 516.8977683220.

The spelling of 138106453 in words is "one hundred thirty-eight million, one hundred six thousand, four hundred fifty-three".