1366574544 has 160 divisors (see below), whose sum is σ = 4149734400. Its totient is φ = 429390720.

The previous prime is 1366574543. The next prime is 1366574549. The reversal of 1366574544 is 4454756631.

1366574544 is a `hidden beast` number, since 1 + 36 + 6 + 5 + 74 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1366574544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366574543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2716597 + ... + 2717099.

It is an arithmetic number, because the mean of its divisors is an integer number (25935840).

Almost surely, 2^1366574544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366574544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2074867200).

1366574544 is an abundant number, since it is smaller than the sum of its proper divisors (2783159856).

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

1366574544 is a wasteful number, since it uses less digits than its factorization.

1366574544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 858 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The square root of 1366574544 is about 36967.2090371994. The cubic root of 1366574544 is about 1109.7141119108.

It can be divided in two parts, 13665 and 74544, that added together give a square (88209 = 297²).

The spelling of 1366574544 in words is "one billion, three hundred sixty-six million, five hundred seventy-four thousand, five hundred forty-four".