1389626642850 has 48 divisors (see below), whose sum is σ = 3449106305568. Its totient is φ = 370262563840.

The previous prime is 1389626642843. The next prime is 1389626642863. The reversal of 1389626642850 is 582466269831.

It is a happy number.

It is a super-2 number, since 2×1389626642850² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3623604 + ... + 3988703.

It is an arithmetic number, because the mean of its divisors is an integer number (71856381366).

Almost surely, 2^{1389626642850} is an apocalyptic number.

1389626642850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389626642850 is an abundant number, since it is smaller than the sum of its proper divisors (2059479662718).

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

1389626642850 is a wasteful number, since it uses less digits than its factorization.

1389626642850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7613539 (or 7613534 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 60.

The spelling of 1389626642850 in words is "one trillion, three hundred eighty-nine billion, six hundred twenty-six million, six hundred forty-two thousand, eight hundred fifty".