138452453 has 2 divisors, whose sum is σ = 138452454. Its totient is φ = 138452452.

The previous prime is 138452443. The next prime is 138452507. The reversal of 138452453 is 354254831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133795489 + 4656964 = 11567^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 138452453 - 2¹⁴ = 138436069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138452423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69226226 + 69226227.

It is an arithmetic number, because the mean of its divisors is an integer number (69226227).

Almost surely, 2^138452453 is an apocalyptic number.

It is an amenable number.

138452453 is a deficient number, since it is larger than the sum of its proper divisors (1).

138452453 is an equidigital number, since it uses as much as digits as its factorization.

138452453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 35.

The square root of 138452453 is about 11766.5820440772. The cubic root of 138452453 is about 517.3290720394.

The spelling of 138452453 in words is "one hundred thirty-eight million, four hundred fifty-two thousand, four hundred fifty-three".