1389174752 has 48 divisors (see below), whose sum is σ = 3129840000. Its totient is φ = 594561408.

The previous prime is 1389174749. The next prime is 1389174781. The reversal of 1389174752 is 2574719831.

It is a junction number, because it is equal to n+sod(n) for n = 1389174697 and 1389174706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181499 + ... + 188997.

It is an arithmetic number, because the mean of its divisors is an integer number (65205000).

Almost surely, 2^1389174752 is an apocalyptic number.

It is an amenable number.

1389174752 is an abundant number, since it is smaller than the sum of its proper divisors (1740665248).

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

1389174752 is an equidigital number, since it uses as much as digits as its factorization.

1389174752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343 (or 8335 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The square root of 1389174752 is about 37271.6346837645. The cubic root of 1389174752 is about 1115.7981246936.

The spelling of 1389174752 in words is "one billion, three hundred eighty-nine million, one hundred seventy-four thousand, seven hundred fifty-two".