1331354564 has 6 divisors (see below), whose sum is σ = 2329870494. Its totient is φ = 665677280.

The previous prime is 1331354513. The next prime is 1331354573. The reversal of 1331354564 is 4654531331.

It can be written as a sum of positive squares in only one way, i.e., 1034136964 + 297217600 = 32158^2 + 17240^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166419317 + ... + 166419324.

It is an arithmetic number, because the mean of its divisors is an integer number (388311749).

Almost surely, 2^1331354564 is an apocalyptic number.

It is an amenable number.

1331354564 is a deficient number, since it is larger than the sum of its proper divisors (998515930).

1331354564 is a wasteful number, since it uses less digits than its factorization.

1331354564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332838645 (or 332838643 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 1331354564 is about 36487.7316916248. The cubic root of 1331354564 is about 1100.0976673611.

Adding to 1331354564 its reverse (4654531331), we get a palindrome (5985885895).

The spelling of 1331354564 in words is "one billion, three hundred thirty-one million, three hundred fifty-four thousand, five hundred sixty-four".