1333016981 has 2 divisors, whose sum is σ = 1333016982. Its totient is φ = 1333016980.

The previous prime is 1333016963. The next prime is 1333016983. The reversal of 1333016981 is 1896103331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1332615025 + 401956 = 36505^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333016981 - 2³⁰ = 259275157 is a prime.

It is a super-2 number, since 2×1333016981² = 3553868543268708722, which contains 22 as substring.

Together with 1333016983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1333016983) 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 as a sum of consecutive naturals, namely, 666508490 + 666508491.

It is an arithmetic number, because the mean of its divisors is an integer number (666508491).

Almost surely, 2^1333016981 is an apocalyptic number.

It is an amenable number.

1333016981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333016981 is an equidigital number, since it uses as much as digits as its factorization.

1333016981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1333016981 is about 36510.5050773062. The cubic root of 1333016981 is about 1100.5553617137. Note that the first 3 decimals are identical.

The spelling of 1333016981 in words is "one billion, three hundred thirty-three million, sixteen thousand, nine hundred eighty-one".