138462653 has 4 divisors (see below), whose sum is σ = 158243040. Its totient is φ = 118682268.

The previous prime is 138462613. The next prime is 138462661. The reversal of 138462653 is 356264831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138462653 - 2⁸ = 138462397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138462613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9890183 + ... + 9890196.

It is an arithmetic number, because the mean of its divisors is an integer number (39560760).

Almost surely, 2^138462653 is an apocalyptic number.

It is an amenable number.

138462653 is a deficient number, since it is larger than the sum of its proper divisors (19780387).

138462653 is an equidigital number, since it uses as much as digits as its factorization.

138462653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19780386.

The product of its digits is 103680, while the sum is 38.

The square root of 138462653 is about 11767.0154669738. The cubic root of 138462653 is about 517.3417758638.

The spelling of 138462653 in words is "one hundred thirty-eight million, four hundred sixty-two thousand, six hundred fifty-three".