1264338443 has 8 divisors (see below), whose sum is σ = 1301965056. Its totient is φ = 1227035200.

The previous prime is 1264338437. The next prime is 1264338461. The reversal of 1264338443 is 3448334621.

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 1264338443 - 2¹⁸ = 1264076299 is a prime.

It is a super-3 number, since 3×1264338443³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1264338397 and 1264338406.

It is not an unprimeable number, because it can be changed into a prime (1264338403) 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, 72896 + ... + 88557.

It is an arithmetic number, because the mean of its divisors is an integer number (162745632).

Almost surely, 2^1264338443 is an apocalyptic number.

1264338443 is a deficient number, since it is larger than the sum of its proper divisors (37626613).

1264338443 is a wasteful number, since it uses less digits than its factorization.

1264338443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161685.

The product of its digits is 165888, while the sum is 38.

The square root of 1264338443 is about 35557.5370772499. The cubic root of 1264338443 is about 1081.3205277795.

The spelling of 1264338443 in words is "one billion, two hundred sixty-four million, three hundred thirty-eight thousand, four hundred forty-three".