1321146464 has 24 divisors (see below), whose sum is σ = 2837463048. Its totient is φ = 600520960.

The previous prime is 1321146461. The next prime is 1321146469. The reversal of 1321146464 is 4646411231.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1321146464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321146461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876277 + ... + 1876980.

It is an arithmetic number, because the mean of its divisors is an integer number (118227627).

Almost surely, 2^1321146464 is an apocalyptic number.

It is an amenable number.

1321146464 is an abundant number, since it is smaller than the sum of its proper divisors (1516316584).

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

1321146464 is a wasteful number, since it uses less digits than its factorization.

1321146464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753278 (or 3753270 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 1321146464 is about 36347.5785163194. The cubic root of 1321146464 is about 1097.2788010750.

Adding to 1321146464 its reverse (4646411231), we get a palindrome (5967557695).

The spelling of 1321146464 in words is "one billion, three hundred twenty-one million, one hundred forty-six thousand, four hundred sixty-four".