1382781705 has 16 divisors (see below), whose sum is σ = 2217741120. Its totient is φ = 735720128.

The previous prime is 1382781671. The next prime is 1382781721. The reversal of 1382781705 is 5071872831.

It is a cyclic number.

It is not a de Polignac number, because 1382781705 - 2⁹ = 1382781193 is a prime.

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, 103722 + ... + 116291.

It is an arithmetic number, because the mean of its divisors is an integer number (138608820).

Almost surely, 2^1382781705 is an apocalyptic number.

1382781705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1382781705 is a deficient number, since it is larger than the sum of its proper divisors (834959415).

1382781705 is a wasteful number, since it uses less digits than its factorization.

1382781705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220440.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 1382781705 is about 37185.7728842631. The cubic root of 1382781705 is about 1114.0838405892.

The spelling of 1382781705 in words is "one billion, three hundred eighty-two million, seven hundred eighty-one thousand, seven hundred five".