1385941265 has 8 divisors (see below), whose sum is σ = 1663350120. Its totient is φ = 1108605952.

The previous prime is 1385941261. The next prime is 1385941283. The reversal of 1385941265 is 5621495831.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 219513856 + 1166427409 = 14816^2 + 34153^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1385941265 - 2² = 1385941261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1385941261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39857 + ... + 66033.

It is an arithmetic number, because the mean of its divisors is an integer number (207918765).

Almost surely, 2^1385941265 is an apocalyptic number.

It is an amenable number.

1385941265 is a deficient number, since it is larger than the sum of its proper divisors (277408855).

1385941265 is a wasteful number, since it uses less digits than its factorization.

1385941265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36771.

The product of its digits is 259200, while the sum is 44.

The square root of 1385941265 is about 37228.2320960854. The cubic root of 1385941265 is about 1114.9317298183.

The spelling of 1385941265 in words is "one billion, three hundred eighty-five million, nine hundred forty-one thousand, two hundred sixty-five".