1323542664 has 24 divisors (see below), whose sum is σ = 3584594910. Its totient is φ = 441180864.

The previous prime is 1323542653. The next prime is 1323542719. The reversal of 1323542664 is 4662453231.

It can be written as a sum of positive squares in only one way, i.e., 1187353764 + 136188900 = 34458^2 + 11670^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9191197 + ... + 9191340.

Almost surely, 2^1323542664 is an apocalyptic number.

It is an amenable number.

1323542664 is an abundant number, since it is smaller than the sum of its proper divisors (2261052246).

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

1323542664 is a wasteful number, since it uses less digits than its factorization.

1323542664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18382549 (or 18382542 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 1323542664 is about 36380.5258895470. The cubic root of 1323542664 is about 1097.9417887461.

Adding to 1323542664 its reverse (4662453231), we get a palindrome (5985995895).

The spelling of 1323542664 in words is "one billion, three hundred twenty-three million, five hundred forty-two thousand, six hundred sixty-four".