1389137070 has 32 divisors (see below), whose sum is σ = 3346624512. Its totient is φ = 369025952.

The previous prime is 1389137051. The next prime is 1389137089. The reversal of 1389137070 is 707319831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1389137051) and next prime (1389137089).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80142 + ... + 95921.

It is an arithmetic number, because the mean of its divisors is an integer number (104582016).

Almost surely, 2^1389137070 is an apocalyptic number.

1389137070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389137070 is an abundant number, since it is smaller than the sum of its proper divisors (1957487442).

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

1389137070 is a wasteful number, since it uses less digits than its factorization.

1389137070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176336.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 1389137070 is about 37271.1291752745. The cubic root of 1389137070 is about 1115.7880357577.

The spelling of 1389137070 in words is "one billion, three hundred eighty-nine million, one hundred thirty-seven thousand, seventy".