1389820710 has 16 divisors (see below), whose sum is σ = 3335569776. Its totient is φ = 370618848.

The previous prime is 1389820699. The next prime is 1389820727. The reversal of 1389820710 is 170289831.

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, 23163649 + ... + 23163708.

It is an arithmetic number, because the mean of its divisors is an integer number (208473111).

Almost surely, 2^1389820710 is an apocalyptic number.

1389820710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389820710 is an abundant number, since it is smaller than the sum of its proper divisors (1945749066).

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

1389820710 is a wasteful number, since it uses less digits than its factorization.

1389820710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46327367.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1389820710 is about 37280.2992209022. The cubic root of 1389820710 is about 1115.9710443920.

The spelling of 1389820710 in words is "one billion, three hundred eighty-nine million, eight hundred twenty thousand, seven hundred ten".