1264661430 has 64 divisors (see below), whose sum is σ = 3199868928. Its totient is φ = 319409280.

The previous prime is 1264661393. The next prime is 1264661479. The reversal of 1264661430 is 341664621.

1264661430 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1264661391 and 1264661400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29244 + ... + 58176.

It is an arithmetic number, because the mean of its divisors is an integer number (49997952).

Almost surely, 2^1264661430 is an apocalyptic number.

1264661430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1264661430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599934464).

1264661430 is an abundant number, since it is smaller than the sum of its proper divisors (1935207498).

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

1264661430 is a wasteful number, since it uses less digits than its factorization.

1264661430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29021.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1264661430 is about 35562.0785388031. The cubic root of 1264661430 is about 1081.4125977310.

The spelling of 1264661430 in words is "one billion, two hundred sixty-four million, six hundred sixty-one thousand, four hundred thirty".