1243363969 has 16 divisors (see below), whose sum is σ = 1381017600. Its totient is φ = 1113418240.

The previous prime is 1243363967. The next prime is 1243363997. The reversal of 1243363969 is 9693633421.

It is a cyclic number.

It is not a de Polignac number, because 1243363969 - 2¹ = 1243363967 is a prime.

It is a super-2 number, since 2×1243363969² = 3091907918814865922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243363967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66357 + ... + 83005.

It is an arithmetic number, because the mean of its divisors is an integer number (86313600).

Almost surely, 2^1243363969 is an apocalyptic number.

It is an amenable number.

1243363969 is a deficient number, since it is larger than the sum of its proper divisors (137653631).

1243363969 is a wasteful number, since it uses less digits than its factorization.

1243363969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16880.

The product of its digits is 629856, while the sum is 46.

The square root of 1243363969 is about 35261.3665220167. The cubic root of 1243363969 is about 1075.3077089922.

The spelling of 1243363969 in words is "one billion, two hundred forty-three million, three hundred sixty-three thousand, nine hundred sixty-nine".