1264320148 has 72 divisors (see below), whose sum is σ = 2783526144. Its totient is φ = 498052800.

The previous prime is 1264320077. The next prime is 1264320149. The reversal of 1264320148 is 8410234621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264320149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 689593 + ... + 691423.

Almost surely, 2^1264320148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1264320148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1391763072).

1264320148 is an abundant number, since it is smaller than the sum of its proper divisors (1519205996).

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

1264320148 is a wasteful number, since it uses less digits than its factorization.

1264320148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133 (or 2124 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1264320148 is about 35557.2798172189. The cubic root of 1264320148 is about 1081.3153121785.

Adding to 1264320148 its reverse (8410234621), we get a palindrome (9674554769).

The spelling of 1264320148 in words is "one billion, two hundred sixty-four million, three hundred twenty thousand, one hundred forty-eight".