1398366634 has 8 divisors (see below), whose sum is σ = 2397199968. Its totient is φ = 599299980.

The previous prime is 1398366601. The next prime is 1398366677. The reversal of 1398366634 is 4366638931.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49941652 + ... + 49941679.

It is an arithmetic number, because the mean of its divisors is an integer number (299649996).

Almost surely, 2^1398366634 is an apocalyptic number.

1398366634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1398366634 is a deficient number, since it is larger than the sum of its proper divisors (998833334).

1398366634 is an equidigital number, since it uses as much as digits as its factorization.

1398366634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99883340.

The product of its digits is 1679616, while the sum is 49.

The square root of 1398366634 is about 37394.7407264711. The cubic root of 1398366634 is about 1118.2537183798.

The spelling of 1398366634 in words is "one billion, three hundred ninety-eight million, three hundred sixty-six thousand, six hundred thirty-four".