1398481308 has 48 divisors (see below), whose sum is σ = 4143650560. Its totient is φ = 399565872.

The previous prime is 1398481241. The next prime is 1398481309. The reversal of 1398481308 is 8031848931.

1398481308 is a `hidden beast` number, since 139 + 8 + 481 + 30 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398481309) 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, 924166 + ... + 925677.

Almost surely, 2^1398481308 is an apocalyptic number.

1398481308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1398481308 is an abundant number, since it is smaller than the sum of its proper divisors (2745169252).

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

1398481308 is a wasteful number, since it uses less digits than its factorization.

1398481308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849863 (or 1849855 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1398481308 is about 37396.2739855189. The cubic root of 1398481308 is about 1118.2842852614.

The spelling of 1398481308 in words is "one billion, three hundred ninety-eight million, four hundred eighty-one thousand, three hundred eight".