1382781005 has 16 divisors (see below), whose sum is σ = 1670131200. Its totient is φ = 1099051200.

The previous prime is 1382780963. The next prime is 1382781013. The reversal of 1382781005 is 5001872831.

It is not a de Polignac number, because 1382781005 - 2¹² = 1382776909 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707780 + ... + 709730.

It is an arithmetic number, because the mean of its divisors is an integer number (104383200).

Almost surely, 2^1382781005 is an apocalyptic number.

It is an amenable number.

1382781005 is a deficient number, since it is larger than the sum of its proper divisors (287350195).

1382781005 is a wasteful number, since it uses less digits than its factorization.

1382781005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1382781005 is about 37185.7634720601. The cubic root of 1382781005 is about 1114.0836525965.

The spelling of 1382781005 in words is "one billion, three hundred eighty-two million, seven hundred eighty-one thousand, five".