1381106673 has 64 divisors (see below), whose sum is σ = 2227357440. Its totient is φ = 842572800.

The previous prime is 1381106663. The next prime is 1381106687. The reversal of 1381106673 is 3766011831.

It is not a de Polignac number, because 1381106673 - 2⁸ = 1381106417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1381106603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2995663 + ... + 2996123.

It is an arithmetic number, because the mean of its divisors is an integer number (34802460).

Almost surely, 2^1381106673 is an apocalyptic number.

It is an amenable number.

1381106673 is a deficient number, since it is larger than the sum of its proper divisors (846250767).

1381106673 is a wasteful number, since it uses less digits than its factorization.

1381106673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1381106673 is about 37163.2435748012. The cubic root of 1381106673 is about 1113.6338105050.

The spelling of 1381106673 in words is "one billion, three hundred eighty-one million, one hundred six thousand, six hundred seventy-three".