1333397081 has 2 divisors, whose sum is σ = 1333397082. Its totient is φ = 1333397080.

The previous prime is 1333397071. The next prime is 1333397123. The reversal of 1333397081 is 1807933331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1332907081 + 490000 = 36509^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333397081 - 2¹⁸ = 1333134937 is a prime.

It is a super-2 number, since 2×1333397081² = 3555895551238641122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1333397011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666698540 + 666698541.

It is an arithmetic number, because the mean of its divisors is an integer number (666698541).

Almost surely, 2^1333397081 is an apocalyptic number.

It is an amenable number.

1333397081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333397081 is an equidigital number, since it uses as much as digits as its factorization.

1333397081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 1333397081 is about 36515.7100574534. The cubic root of 1333397081 is about 1100.6599568651.

The spelling of 1333397081 in words is "one billion, three hundred thirty-three million, three hundred ninety-seven thousand, eighty-one".