1383801660 has 72 divisors (see below), whose sum is σ = 4299933456. Its totient is φ = 360011520.

The previous prime is 1383801593. The next prime is 1383801667. The reversal of 1383801660 is 661083831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383801667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86374 + ... + 101133.

It is an arithmetic number, because the mean of its divisors is an integer number (59721298).

Almost surely, 2^1383801660 is an apocalyptic number.

1383801660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383801660 is an abundant number, since it is smaller than the sum of its proper divisors (2916131796).

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

1383801660 is a wasteful number, since it uses less digits than its factorization.

1383801660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187563 (or 187558 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1383801660 is about 37199.4846738500. The cubic root of 1383801660 is about 1114.3576934343.

The spelling of 1383801660 in words is "one billion, three hundred eighty-three million, eight hundred one thousand, six hundred sixty".