1366450620 has 96 divisors (see below), whose sum is σ = 3920313600. Its totient is φ = 355505664.

The previous prime is 1366450619. The next prime is 1366450627. The reversal of 1366450620 is 260546631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366450627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490672 + ... + 493448.

It is an arithmetic number, because the mean of its divisors is an integer number (40836600).

Almost surely, 2^1366450620 is an apocalyptic number.

1366450620 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 1366450620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1960156800).

1366450620 is an abundant number, since it is smaller than the sum of its proper divisors (2553862980).

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

1366450620 is a wasteful number, since it uses less digits than its factorization.

1366450620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987 (or 2985 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1366450620 is about 36965.5328650893. The cubic root of 1366450620 is about 1109.6805671207.

The spelling of 1366450620 in words is "one billion, three hundred sixty-six million, four hundred fifty thousand, six hundred twenty".