1366009199 has 12 divisors (see below), whose sum is σ = 1463232024. Its totient is φ = 1274776272.

The previous prime is 1366009163. The next prime is 1366009207. The reversal of 1366009199 is 9919006631.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1366009199 is a prime.

It is a super-2 number, since 2×1366009199² = 3731962263505243202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366009129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4052 + ... + 52425.

It is an arithmetic number, because the mean of its divisors is an integer number (121936002).

Almost surely, 2^1366009199 is an apocalyptic number.

1366009199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1366009199 is a deficient number, since it is larger than the sum of its proper divisors (97222825).

1366009199 is an equidigital number, since it uses as much as digits as its factorization.

1366009199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56582 (or 56563 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 1366009199 is about 36959.5616721844. The cubic root of 1366009199 is about 1109.5610630923.

The spelling of 1366009199 in words is "one billion, three hundred sixty-six million, nine thousand, one hundred ninety-nine".