1369777868 has 12 divisors (see below), whose sum is σ = 2523275160. Its totient is φ = 648842112.

The previous prime is 1369777867. The next prime is 1369777879. The reversal of 1369777868 is 8687779631.

It is a self number, because there is not a number n which added to its sum of digits gives 1369777868.

It is not an unprimeable number, because it can be changed into a prime (1369777861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9011621 + ... + 9011772.

It is an arithmetic number, because the mean of its divisors is an integer number (210272930).

Almost surely, 2^1369777868 is an apocalyptic number.

It is an amenable number.

1369777868 is a deficient number, since it is larger than the sum of its proper divisors (1153497292).

1369777868 is a wasteful number, since it uses less digits than its factorization.

1369777868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18023416 (or 18023414 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 62.

The square root of 1369777868 is about 37010.5102369584. The cubic root of 1369777868 is about 1110.5805117590.

The spelling of 1369777868 in words is "one billion, three hundred sixty-nine million, seven hundred seventy-seven thousand, eight hundred sixty-eight".