1398101808 has 20 divisors (see below), whose sum is σ = 3611763128. Its totient is φ = 466033920.

The previous prime is 1398101807. The next prime is 1398101813. The reversal of 1398101808 is 8081018931.

It is not an unprimeable number, because it can be changed into a prime (1398101807) 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, 14563513 + ... + 14563608.

Almost surely, 2^1398101808 is an apocalyptic number.

It is an amenable number.

1398101808 is an abundant number, since it is smaller than the sum of its proper divisors (2213661320).

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

1398101808 is a wasteful number, since it uses less digits than its factorization.

1398101808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29127132 (or 29127126 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 39.

The square root of 1398101808 is about 37391.1996063245. The cubic root of 1398101808 is about 1118.1831214065.

The spelling of 1398101808 in words is "one billion, three hundred ninety-eight million, one hundred one thousand, eight hundred eight".