1379663998 has 8 divisors (see below), whose sum is σ = 2070442008. Its totient is φ = 689516664.

The previous prime is 1379663983. The next prime is 1379664001. The reversal of 1379663998 is 8993669731.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 152161 + ... + 160972.

It is an arithmetic number, because the mean of its divisors is an integer number (258805251).

Almost surely, 2^1379663998 is an apocalyptic number.

1379663998 is a deficient number, since it is larger than the sum of its proper divisors (690778010).

1379663998 is a wasteful number, since it uses less digits than its factorization.

1379663998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315338.

The product of its digits is 13226976, while the sum is 61.

The square root of 1379663998 is about 37143.8285318032. The cubic root of 1379663998 is about 1113.2459159215.

The spelling of 1379663998 in words is "one billion, three hundred seventy-nine million, six hundred sixty-three thousand, nine hundred ninety-eight".