1368253777 has 16 divisors (see below), whose sum is σ = 1526361408. Its totient is φ = 1215938880.

The previous prime is 1368253759. The next prime is 1368253829. The reversal of 1368253777 is 7773528631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368253777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1368253777.

It is not an unprimeable number, because it can be changed into a prime (1368253277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160843 + ... + 169135.

It is an arithmetic number, because the mean of its divisors is an integer number (95397588).

Almost surely, 2^1368253777 is an apocalyptic number.

It is an amenable number.

1368253777 is a deficient number, since it is larger than the sum of its proper divisors (158107631).

1368253777 is a wasteful number, since it uses less digits than its factorization.

1368253777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640.

The product of its digits is 1481760, while the sum is 49.

The square root of 1368253777 is about 36989.9145308556. The cubic root of 1368253777 is about 1110.1684610266.

The spelling of 1368253777 in words is "one billion, three hundred sixty-eight million, two hundred fifty-three thousand, seven hundred seventy-seven".