1366886772 has 48 divisors (see below), whose sum is σ = 3548977600. Its totient is φ = 454960800.

The previous prime is 1366886767. The next prime is 1366886777. The reversal of 1366886772 is 2776886631.

It is an interprime number because it is at equal distance from previous prime (1366886767) and next prime (1366886777).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366886777) 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, 67647 + ... + 85497.

Almost surely, 2^1366886772 is an apocalyptic number.

1366886772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1366886772 is an abundant number, since it is smaller than the sum of its proper divisors (2182090828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366886772 is a wasteful number, since it uses less digits than its factorization.

1366886772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18573 (or 18565 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 1366886772 is about 36971.4318359460. The cubic root of 1366886772 is about 1109.7986194202.

The spelling of 1366886772 in words is "one billion, three hundred sixty-six million, eight hundred eighty-six thousand, seven hundred seventy-two".