1368903808 has 16 divisors (see below), whose sum is σ = 2727113310. Its totient is φ = 684451840.

The previous prime is 1368903799. The next prime is 1368903827. The reversal of 1368903808 is 8083098631.

It can be written as a sum of positive squares in only one way, i.e., 811566144 + 557337664 = 28488^2 + 23608^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5347153 + ... + 5347408.

Almost surely, 2^1368903808 is an apocalyptic number.

It is an amenable number.

1368903808 is a deficient number, since it is larger than the sum of its proper divisors (1358209502).

1368903808 is an equidigital number, since it uses as much as digits as its factorization.

1368903808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10694575 (or 10694563 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1368903808 is about 36998.7000852733. The cubic root of 1368903808 is about 1110.3442397400.

The spelling of 1368903808 in words is "one billion, three hundred sixty-eight million, nine hundred three thousand, eight hundred eight".