1264453340 has 48 divisors (see below), whose sum is σ = 2688535584. Its totient is φ = 499488000.

The previous prime is 1264453321. The next prime is 1264453343. The reversal of 1264453340 is 433544621.

It is a junction number, because it is equal to n+sod(n) for n = 1264453297 and 1264453306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264453343) 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, 1334747 + ... + 1335693.

It is an arithmetic number, because the mean of its divisors is an integer number (56011158).

Almost surely, 2^1264453340 is an apocalyptic number.

1264453340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264453340 is an abundant number, since it is smaller than the sum of its proper divisors (1424082244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264453340 is a wasteful number, since it uses less digits than its factorization.

1264453340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 1264453340 is about 35559.1526895678. The cubic root of 1264453340 is about 1081.3532818579.

Adding to 1264453340 its reverse (433544621), we get a palindrome (1697997961).

The spelling of 1264453340 in words is "one billion, two hundred sixty-four million, four hundred fifty-three thousand, three hundred forty".