1366352840 has 32 divisors (see below), whose sum is σ = 3075841080. Its totient is φ = 546266112.

The previous prime is 1366352809. The next prime is 1366352843. The reversal of 1366352840 is 482536631.

It can be written as a sum of positive squares in 4 ways, for example, as 1238617636 + 127735204 = 35194^2 + 11302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1366352794 and 1366352803.

It is not an unprimeable number, because it can be changed into a prime (1366352843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84272 + ... + 99168.

Almost surely, 2^1366352840 is an apocalyptic number.

1366352840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366352840 is an abundant number, since it is smaller than the sum of its proper divisors (1709488240).

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

1366352840 is a wasteful number, since it uses less digits than its factorization.

1366352840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17201 (or 17197 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 1366352840 is about 36964.2102580320. The cubic root of 1366352840 is about 1109.6540977768.

The spelling of 1366352840 in words is "one billion, three hundred sixty-six million, three hundred fifty-two thousand, eight hundred forty".