1332666891 has 16 divisors (see below), whose sum is σ = 1976534400. Its totient is φ = 887448744.

The previous prime is 1332666871. The next prime is 1332666893. The reversal of 1332666891 is 1986662331.

It is not a de Polignac number, because 1332666891 - 2⁶ = 1332666827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1332666893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2721 + ... + 51698.

It is an arithmetic number, because the mean of its divisors is an integer number (123533400).

Almost surely, 2^1332666891 is an apocalyptic number.

1332666891 is a deficient number, since it is larger than the sum of its proper divisors (643867509).

1332666891 is an equidigital number, since it uses as much as digits as its factorization.

1332666891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55335 (or 55329 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 1332666891 is about 36505.7103889241. The cubic root of 1332666891 is about 1100.4590070619.

The spelling of 1332666891 in words is "one billion, three hundred thirty-two million, six hundred sixty-six thousand, eight hundred ninety-one".