1389251803880 has 16 divisors (see below), whose sum is σ = 3125816558820. Its totient is φ = 555700721536.

The previous prime is 1389251803879. The next prime is 1389251803897. The reversal of 1389251803880 is 883081529831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1381372401124 + 7879402756 = 1175318^2 + 88766^2 .

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, 17365647509 + ... + 17365647588.

Almost surely, 2^{1389251803880} is an apocalyptic number.

1389251803880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389251803880 is an abundant number, since it is smaller than the sum of its proper divisors (1736564754940).

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

1389251803880 is a wasteful number, since it uses less digits than its factorization.

1389251803880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34731295108 (or 34731295104 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 56.

The spelling of 1389251803880 in words is "one trillion, three hundred eighty-nine billion, two hundred fifty-one million, eight hundred three thousand, eight hundred eighty".