1398119418 has 24 divisors (see below), whose sum is σ = 3074474208. Its totient is φ = 459083592.

The previous prime is 1398119399. The next prime is 1398119431. The reversal of 1398119418 is 8149118931.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 578446 + ... + 580857.

It is an arithmetic number, because the mean of its divisors is an integer number (128103092).

Almost surely, 2^1398119418 is an apocalyptic number.

1398119418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1398119418 is an abundant number, since it is smaller than the sum of its proper divisors (1676354790).

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

1398119418 is a wasteful number, since it uses less digits than its factorization.

1398119418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159378 (or 1159375 counting only the distinct ones).

The product of its digits is 62208, while the sum is 45.

The square root of 1398119418 is about 37391.4350888008. The cubic root of 1398119418 is about 1118.1878161343.

The spelling of 1398119418 in words is "one billion, three hundred ninety-eight million, one hundred nineteen thousand, four hundred eighteen".