45378199 has 2 divisors, whose sum is σ = 45378200. Its totient is φ = 45378198.

The previous prime is 45378197. The next prime is 45378211. The reversal of 45378199 is 99187354.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45378199 - 2¹ = 45378197 is a prime.

Together with 45378197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45378191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22689099 + 22689100.

It is an arithmetic number, because the mean of its divisors is an integer number (22689100).

Almost surely, 2^45378199 is an apocalyptic number.

45378199 is a deficient number, since it is larger than the sum of its proper divisors (1).

45378199 is an equidigital number, since it uses as much as digits as its factorization.

45378199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 45378199 is about 6736.3342405198. The cubic root of 45378199 is about 356.6830063069.

The spelling of 45378199 in words is "forty-five million, three hundred seventy-eight thousand, one hundred ninety-nine".