1398842518 has 16 divisors (see below), whose sum is σ = 2224189584. Its totient is φ = 657538560.

The previous prime is 1398842507. The next prime is 1398842527. The reversal of 1398842518 is 8152488931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8158 + ... + 53518.

It is an arithmetic number, because the mean of its divisors is an integer number (139011849).

Almost surely, 2^1398842518 is an apocalyptic number.

1398842518 is a deficient number, since it is larger than the sum of its proper divisors (825347066).

1398842518 is a wasteful number, since it uses less digits than its factorization.

1398842518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46287.

The product of its digits is 552960, while the sum is 49.

The square root of 1398842518 is about 37401.1031655485. The cubic root of 1398842518 is about 1118.3805565265.

The spelling of 1398842518 in words is "one billion, three hundred ninety-eight million, eight hundred forty-two thousand, five hundred eighteen".