1368791918 has 16 divisors (see below), whose sum is σ = 2282453376. Its totient is φ = 611370720.

The previous prime is 1368791911. The next prime is 1368791923. The reversal of 1368791918 is 8191978631.

It is a self number, because there is not a number n which added to its sum of digits gives 1368791918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368791911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 848321 + ... + 849932.

It is an arithmetic number, because the mean of its divisors is an integer number (142653336).

Almost surely, 2^1368791918 is an apocalyptic number.

1368791918 is a deficient number, since it is larger than the sum of its proper divisors (913661458).

1368791918 is a wasteful number, since it uses less digits than its factorization.

1368791918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698299.

The product of its digits is 653184, while the sum is 53.

The square root of 1368791918 is about 36997.1879742231. The cubic root of 1368791918 is about 1110.3139868711.

The spelling of 1368791918 in words is "one billion, three hundred sixty-eight million, seven hundred ninety-one thousand, nine hundred eighteen".