1385891041 has 4 divisors (see below), whose sum is σ = 1396007172. Its totient is φ = 1375774912.

The previous prime is 1385891029. The next prime is 1385891077. The reversal of 1385891041 is 1401985831.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1041417441 + 344473600 = 32271^2 + 18560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385891041 - 2²¹ = 1383793889 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1385890985 and 1385891003.

It is not an unprimeable number, because it can be changed into a prime (1385891081) 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 3 ways as a sum of consecutive naturals, for example, 5057860 + ... + 5058133.

It is an arithmetic number, because the mean of its divisors is an integer number (349001793).

Almost surely, 2^1385891041 is an apocalyptic number.

It is an amenable number.

1385891041 is a deficient number, since it is larger than the sum of its proper divisors (10116131).

1385891041 is a wasteful number, since it uses less digits than its factorization.

1385891041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10116130.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1385891041 is about 37227.5575481390. The cubic root of 1385891041 is about 1114.9182619537.

The spelling of 1385891041 in words is "one billion, three hundred eighty-five million, eight hundred ninety-one thousand, forty-one".