45781319 has 2 divisors, whose sum is σ = 45781320. Its totient is φ = 45781318.

The previous prime is 45781273. The next prime is 45781361. The reversal of 45781319 is 91318754.

45781319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45781319 - 2¹² = 45777223 is a prime.

It is a super-2 number, since 2×45781319² = 4191858338759522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45781019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22890659 + 22890660.

It is an arithmetic number, because the mean of its divisors is an integer number (22890660).

Almost surely, 2^45781319 is an apocalyptic number.

45781319 is a deficient number, since it is larger than the sum of its proper divisors (1).

45781319 is an equidigital number, since it uses as much as digits as its factorization.

45781319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 45781319 is about 6766.1894002459. The cubic root of 45781319 is about 357.7360991154.

The spelling of 45781319 in words is "forty-five million, seven hundred eighty-one thousand, three hundred nineteen".