1381102643 has 4 divisors (see below), whose sum is σ = 1441150608. Its totient is φ = 1321054680.

The previous prime is 1381102631. The next prime is 1381102649. The reversal of 1381102643 is 3462011831.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1381102643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381102649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30023948 + ... + 30023993.

It is an arithmetic number, because the mean of its divisors is an integer number (360287652).

Almost surely, 2^1381102643 is an apocalyptic number.

1381102643 is a deficient number, since it is larger than the sum of its proper divisors (60047965).

1381102643 is an equidigital number, since it uses as much as digits as its factorization.

1381102643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60047964.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1381102643 is about 37163.1893545212. The cubic root of 1381102643 is about 1113.6327273281.

The spelling of 1381102643 in words is "one billion, three hundred eighty-one million, one hundred two thousand, six hundred forty-three".