1368991774 has 24 divisors (see below), whose sum is σ = 2127406248. Its totient is φ = 660290400.

The previous prime is 1368991769. The next prime is 1368991783. The reversal of 1368991774 is 4771998631.

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 11 ways as a sum of consecutive naturals, for example, 3448144 + ... + 3448540.

It is an arithmetic number, because the mean of its divisors is an integer number (88641927).

Almost surely, 2^1368991774 is an apocalyptic number.

1368991774 is a deficient number, since it is larger than the sum of its proper divisors (758414474).

1368991774 is an equidigital number, since it uses as much as digits as its factorization.

1368991774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 543 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 55.

The square root of 1368991774 is about 36999.8888376709. Note that the first 4 decimals coincide. The cubic root of 1368991774 is about 1110.3680228694.

The spelling of 1368991774 in words is "one billion, three hundred sixty-eight million, nine hundred ninety-one thousand, seven hundred seventy-four".