1389136670 has 16 divisors (see below), whose sum is σ = 2500878240. Its totient is φ = 555558624.

The previous prime is 1389136667. The next prime is 1389136673. The reversal of 1389136670 is 766319831.

It is an interprime number because it is at equal distance from previous prime (1389136667) and next prime (1389136673).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389136673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90044 + ... + 104336.

It is an arithmetic number, because the mean of its divisors is an integer number (156304890).

Almost surely, 2^1389136670 is an apocalyptic number.

1389136670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389136670 is a deficient number, since it is larger than the sum of its proper divisors (1111741570).

1389136670 is a wasteful number, since it uses less digits than its factorization.

1389136670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24019.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1389136670 is about 37271.1238091904. The cubic root of 1389136670 is about 1115.7879286611.

The spelling of 1389136670 in words is "one billion, three hundred eighty-nine million, one hundred thirty-six thousand, six hundred seventy".