1398518674 has 32 divisors (see below), whose sum is σ = 2591867520. Its totient is φ = 552469248.

The previous prime is 1398518633. The next prime is 1398518683. The reversal of 1398518674 is 4768158931.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61207 + ... + 80890.

It is an arithmetic number, because the mean of its divisors is an integer number (80995860).

Almost surely, 2^1398518674 is an apocalyptic number.

1398518674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1398518674 is a deficient number, since it is larger than the sum of its proper divisors (1193348846).

1398518674 is a wasteful number, since it uses less digits than its factorization.

1398518674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142162.

The product of its digits is 1451520, while the sum is 52.

The square root of 1398518674 is about 37396.7735774091. The cubic root of 1398518674 is about 1118.2942449794.

The spelling of 1398518674 in words is "one billion, three hundred ninety-eight million, five hundred eighteen thousand, six hundred seventy-four".