1366199040 has 144 divisors (see below), whose sum is σ = 4425636096. Its totient is φ = 359116800.

The previous prime is 1366198997. The next prime is 1366199143. The reversal of 1366199040 is 409916631.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1366199040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270135 + ... + 275145.

It is an arithmetic number, because the mean of its divisors is an integer number (30733584).

Almost surely, 2^1366199040 is an apocalyptic number.

1366199040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366199040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2212818048).

1366199040 is an abundant number, since it is smaller than the sum of its proper divisors (3059437056).

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

1366199040 is an equidigital number, since it uses as much as digits as its factorization.

1366199040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106 (or 5092 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 1366199040 is about 36962.1298087651. The cubic root of 1366199040 is about 1109.6124610928.

The spelling of 1366199040 in words is "one billion, three hundred sixty-six million, one hundred ninety-nine thousand, forty".