138692453 has 8 divisors (see below), whose sum is σ = 139728000. Its totient is φ = 137660688.

The previous prime is 138692447. The next prime is 138692459. The reversal of 138692453 is 354296831.

It is an interprime number because it is at equal distance from previous prime (138692447) and next prime (138692459).

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

It is a cyclic number.

It is not a de Polignac number, because 138692453 - 2²⁴ = 121915237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138692453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138692459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140600 + ... + 141582.

It is an arithmetic number, because the mean of its divisors is an integer number (17466000).

Almost surely, 2^138692453 is an apocalyptic number.

It is an amenable number.

138692453 is a deficient number, since it is larger than the sum of its proper divisors (1035547).

138692453 is an equidigital number, since it uses as much as digits as its factorization.

138692453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891.

The product of its digits is 155520, while the sum is 41.

The square root of 138692453 is about 11776.7760019455. The cubic root of 138692453 is about 517.6278203404.

It can be divided in two parts, 1386 and 92453, that added together give a palindrome (93839).

The spelling of 138692453 in words is "one hundred thirty-eight million, six hundred ninety-two thousand, four hundred fifty-three".