1366361040 has 120 divisors (see below), whose sum is σ = 4655889504. Its totient is φ = 331232000.

The previous prime is 1366361033. The next prime is 1366361057. The reversal of 1366361040 is 401636631.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1366360989 and 1366361007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5515 + ... + 52565.

Almost surely, 2^1366361040 is an apocalyptic number.

1366361040 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 1366361040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2327944752).

1366361040 is an abundant number, since it is smaller than the sum of its proper divisors (3289528464).

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

1366361040 is a wasteful number, since it uses less digits than its factorization.

1366361040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47089 (or 47072 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1366361040 is about 36964.3211759664. The cubic root of 1366361040 is about 1109.6563175903.

Adding to 1366361040 its reverse (401636631), we get a palindrome (1767997671).

The spelling of 1366361040 in words is "one billion, three hundred sixty-six million, three hundred sixty-one thousand, forty".