138280949464 has 16 divisors (see below), whose sum is σ = 296316320400. Its totient is φ = 59263264032.

The previous prime is 138280949453. The next prime is 138280949533. The reversal of 138280949464 is 464949082831.

It is a junction number, because it is equal to n+sod(n) for n = 138280949399 and 138280949408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1234651279 + ... + 1234651390.

It is an arithmetic number, because the mean of its divisors is an integer number (18519770025).

Almost surely, 2^138280949464 is an apocalyptic number.

138280949464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138280949464 is an abundant number, since it is smaller than the sum of its proper divisors (158035370936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138280949464 is a wasteful number, since it uses less digits than its factorization.

138280949464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469302682 (or 2469302678 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 58.

The spelling of 138280949464 in words is "one hundred thirty-eight billion, two hundred eighty million, nine hundred forty-nine thousand, four hundred sixty-four".