1540943233 has 2 divisors, whose sum is σ = 1540943234. Its totient is φ = 1540943232.

The previous prime is 1540943231. The next prime is 1540943237. The reversal of 1540943233 is 3323490451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1540719504 + 223729 = 39252^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 1540943233 - 2¹ = 1540943231 is a prime.

Together with 1540943231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1540943231) 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, 770471616 + 770471617.

It is an arithmetic number, because the mean of its divisors is an integer number (770471617).

Almost surely, 2^1540943233 is an apocalyptic number.

It is an amenable number.

1540943233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540943233 is an equidigital number, since it uses as much as digits as its factorization.

1540943233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 1540943233 is about 39254.8498022856. The cubic root of 1540943233 is about 1155.0360696618.

The spelling of 1540943233 in words is "one billion, five hundred forty million, nine hundred forty-three thousand, two hundred thirty-three".