45378769 has 2 divisors, whose sum is σ = 45378770. Its totient is φ = 45378768.

The previous prime is 45378757. The next prime is 45378787. The reversal of 45378769 is 96787354.

It is a happy number.

45378769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34574400 + 10804369 = 5880^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 45378769 - 2⁵ = 45378737 is a prime.

It is a super-2 number, since 2×45378769² = 4118465351910722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45378709) 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, 22689384 + 22689385.

It is an arithmetic number, because the mean of its divisors is an integer number (22689385).

Almost surely, 2^45378769 is an apocalyptic number.

It is an amenable number.

45378769 is a deficient number, since it is larger than the sum of its proper divisors (1).

45378769 is an equidigital number, since it uses as much as digits as its factorization.

45378769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 49.

The square root of 45378769 is about 6736.3765482639. The cubic root of 45378769 is about 356.6844997440.

The spelling of 45378769 in words is "forty-five million, three hundred seventy-eight thousand, seven hundred sixty-nine".