138858963769 has 4 divisors (see below), whose sum is σ = 138859770960. Its totient is φ = 138858156580.

The previous prime is 138858963757. The next prime is 138858963787. The reversal of 138858963769 is 967369858831.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 138858963769 - 2²⁵ = 138825409337 is a prime.

It is a super-2 number, since 2×138858963769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138858966769) 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, 30727 + ... + 527884.

It is an arithmetic number, because the mean of its divisors is an integer number (34714942740).

Almost surely, 2^138858963769 is an apocalyptic number.

It is an amenable number.

138858963769 is a deficient number, since it is larger than the sum of its proper divisors (807191).

138858963769 is an equidigital number, since it uses as much as digits as its factorization.

138858963769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807190.

The product of its digits is 470292480, while the sum is 73.

The spelling of 138858963769 in words is "one hundred thirty-eight billion, eight hundred fifty-eight million, nine hundred sixty-three thousand, seven hundred sixty-nine".