1332505981 has 2 divisors, whose sum is σ = 1332505982. Its totient is φ = 1332505980.

The previous prime is 1332505969. The next prime is 1332506009. The reversal of 1332505981 is 1895052331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929701081 + 402804900 = 30491^2 + 20070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1332505981 - 2⁹ = 1332505469 is a prime.

It is a super-2 number, since 2×1332505981² = 3551144378801544722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1332505981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1332505921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666252990 + 666252991.

It is an arithmetic number, because the mean of its divisors is an integer number (666252991).

Almost surely, 2^1332505981 is an apocalyptic number.

It is an amenable number.

1332505981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332505981 is an equidigital number, since it uses as much as digits as its factorization.

1332505981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1332505981 is about 36503.5064206166. The cubic root of 1332505981 is about 1100.4147144265.

The spelling of 1332505981 in words is "one billion, three hundred thirty-two million, five hundred five thousand, nine hundred eighty-one".