1389197832 has 64 divisors (see below), whose sum is σ = 3845318400. Its totient is φ = 414680640.

The previous prime is 1389197813. The next prime is 1389197839. The reversal of 1389197832 is 2387919831.

It is not an unprimeable number, because it can be changed into a prime (1389197839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21582 + ... + 56957.

It is an arithmetic number, because the mean of its divisors is an integer number (60083100).

Almost surely, 2^1389197832 is an apocalyptic number.

1389197832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1389197832 is an abundant number, since it is smaller than the sum of its proper divisors (2456120568).

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

1389197832 is a wasteful number, since it uses less digits than its factorization.

1389197832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78626 (or 78622 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 1389197832 is about 37271.9443013106. The cubic root of 1389197832 is about 1115.8043040165.

The spelling of 1389197832 in words is "one billion, three hundred eighty-nine million, one hundred ninety-seven thousand, eight hundred thirty-two".