1381044506 has 32 divisors (see below), whose sum is σ = 2152008000. Its totient is φ = 664377472.

The previous prime is 1381044491. The next prime is 1381044517. The reversal of 1381044506 is 6054401831.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123100 + ... + 1124328.

It is an arithmetic number, because the mean of its divisors is an integer number (67250250).

Almost surely, 2^1381044506 is an apocalyptic number.

1381044506 is a deficient number, since it is larger than the sum of its proper divisors (770963494).

1381044506 is a wasteful number, since it uses less digits than its factorization.

1381044506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1381044506 is about 37162.4071610008. The cubic root of 1381044506 is about 1113.6171011242.

The spelling of 1381044506 in words is "one billion, three hundred eighty-one million, forty-four thousand, five hundred six".