1333330981 has 2 divisors, whose sum is σ = 1333330982. Its totient is φ = 1333330980.

The previous prime is 1333330979. The next prime is 1333331033. The reversal of 1333330981 is 1890333331.

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., 1097861956 + 235469025 = 33134^2 + 15345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333330981 - 2¹ = 1333330979 is a prime.

It is a super-2 number, since 2×1333330981² = 3555543009788844722, which contains 22 as substring.

Together with 1333330979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1333330931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666665490 + 666665491.

It is an arithmetic number, because the mean of its divisors is an integer number (666665491).

Almost surely, 2^1333330981 is an apocalyptic number.

It is an amenable number.

1333330981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333330981 is an equidigital number, since it uses as much as digits as its factorization.

1333330981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 1333330981 is about 36514.8049563461. The cubic root of 1333330981 is about 1100.6417690284.

The spelling of 1333330981 in words is "one billion, three hundred thirty-three million, three hundred thirty thousand, nine hundred eighty-one".