1332541661 has 6 divisors (see below), whose sum is σ = 1464694686. Its totient is φ = 1211401400.

The previous prime is 1332541657. The next prime is 1332541667. The reversal of 1332541661 is 1661452331.

It can be written as a sum of positive squares in only one way, i.e., 1278062500 + 54479161 = 35750^2 + 7381^2 .

It is not a de Polignac number, because 1332541661 - 2² = 1332541657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1332541667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5506250 + ... + 5506491.

It is an arithmetic number, because the mean of its divisors is an integer number (244115781).

Almost surely, 2^1332541661 is an apocalyptic number.

1332541661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1332541661 is a deficient number, since it is larger than the sum of its proper divisors (132153025).

1332541661 is a wasteful number, since it uses less digits than its factorization.

1332541661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11012763 (or 11012752 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 1332541661 is about 36503.9951375189. The cubic root of 1332541661 is about 1100.4245361326.

Adding to 1332541661 its reverse (1661452331), we get a palindrome (2993993992).

The spelling of 1332541661 in words is "one billion, three hundred thirty-two million, five hundred forty-one thousand, six hundred sixty-one".