1366160640 has 144 divisors (see below), whose sum is σ = 4698976128. Its totient is φ = 336273408.

The previous prime is 1366160633. The next prime is 1366160641. The reversal of 1366160640 is 460616631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366160641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36237 + ... + 63603.

Almost surely, 2^1366160640 is an apocalyptic number.

1366160640 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 1366160640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2349488064).

1366160640 is an abundant number, since it is smaller than the sum of its proper divisors (3332815488).

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

1366160640 is a wasteful number, since it uses less digits than its factorization.

1366160640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27404 (or 27390 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1366160640 is about 36961.6103545287. The cubic root of 1366160640 is about 1109.6020649703.

The spelling of 1366160640 in words is "one billion, three hundred sixty-six million, one hundred sixty thousand, six hundred forty".