1381006105 has 8 divisors (see below), whose sum is σ = 1657678464. Its totient is φ = 1104490800.

The previous prime is 1381006057. The next prime is 1381006111. The reversal of 1381006105 is 5016001831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1381006105 - 2²¹ = 1378908953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1381006105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18961 + ... + 55870.

It is an arithmetic number, because the mean of its divisors is an integer number (207209808).

Almost surely, 2^1381006105 is an apocalyptic number.

It is an amenable number.

1381006105 is a deficient number, since it is larger than the sum of its proper divisors (276672359).

1381006105 is an equidigital number, since it uses as much as digits as its factorization.

1381006105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78527.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1381006105 is about 37161.8904928154. The cubic root of 1381006105 is about 1113.6067793698.

Adding to 1381006105 its reverse (5016001831), we get a palindrome (6397007936).

The spelling of 1381006105 in words is "one billion, three hundred eighty-one million, six thousand, one hundred five".