1398105860 has 12 divisors (see below), whose sum is σ = 2936022348. Its totient is φ = 559242336.

The previous prime is 1398105847. The next prime is 1398105869. The reversal of 1398105860 is 685018931.

It can be written as a sum of positive squares in 2 ways, for example, as 582546496 + 815559364 = 24136^2 + 28558^2 .

It is not an unprimeable number, because it can be changed into a prime (1398105869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34952627 + ... + 34952666.

It is an arithmetic number, because the mean of its divisors is an integer number (244668529).

Almost surely, 2^1398105860 is an apocalyptic number.

1398105860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1398105860 is an abundant number, since it is smaller than the sum of its proper divisors (1537916488).

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

1398105860 is a wasteful number, since it uses less digits than its factorization.

1398105860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69905302 (or 69905300 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 1398105860 is about 37391.2537901579. The cubic root of 1398105860 is about 1118.1842016506.

The spelling of 1398105860 in words is "one billion, three hundred ninety-eight million, one hundred five thousand, eight hundred sixty".