1389261198 has 32 divisors (see below), whose sum is σ = 2994163200. Its totient is φ = 427192416.

The previous prime is 1389261191. The next prime is 1389261217. The reversal of 1389261198 is 8911629831.

1389261198 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389261191) 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, 141823 + ... + 151301.

It is an arithmetic number, because the mean of its divisors is an integer number (93567600).

Almost surely, 2^1389261198 is an apocalyptic number.

1389261198 is an abundant number, since it is smaller than the sum of its proper divisors (1604902002).

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

1389261198 is a wasteful number, since it uses less digits than its factorization.

1389261198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11376.

The product of its digits is 186624, while the sum is 48.

The square root of 1389261198 is about 37272.7943411813. The cubic root of 1389261198 is about 1115.8212689581.

The spelling of 1389261198 in words is "one billion, three hundred eighty-nine million, two hundred sixty-one thousand, one hundred ninety-eight".