1382731668 has 24 divisors (see below), whose sum is σ = 3584860160. Its totient is φ = 460910520.

The previous prime is 1382731661. The next prime is 1382731723. The reversal of 1382731668 is 8661372831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1382731661) 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, 6401428 + ... + 6401643.

Almost surely, 2^1382731668 is an apocalyptic number.

1382731668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1382731668 is an abundant number, since it is smaller than the sum of its proper divisors (2202128492).

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

1382731668 is a wasteful number, since it uses less digits than its factorization.

1382731668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12803084 (or 12803076 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 1382731668 is about 37185.1000805430. The cubic root of 1382731668 is about 1114.0704024389.

The spelling of 1382731668 in words is "one billion, three hundred eighty-two million, seven hundred thirty-one thousand, six hundred sixty-eight".