1398798338 has 16 divisors (see below), whose sum is σ = 2398651584. Its totient is φ = 599307120.

The previous prime is 1398798319. The next prime is 1398798367. The reversal of 1398798338 is 8338978931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41393 + ... + 67163.

It is an arithmetic number, because the mean of its divisors is an integer number (149915724).

Almost surely, 2^1398798338 is an apocalyptic number.

1398798338 is a deficient number, since it is larger than the sum of its proper divisors (999853246).

1398798338 is a wasteful number, since it uses less digits than its factorization.

1398798338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29657.

The product of its digits is 7838208, while the sum is 59.

The square root of 1398798338 is about 37400.5125365950. The cubic root of 1398798338 is about 1118.3687823698.

The spelling of 1398798338 in words is "one billion, three hundred ninety-eight million, seven hundred ninety-eight thousand, three hundred thirty-eight".