945378199 has 4 divisors (see below), whose sum is σ = 955124464. Its totient is φ = 935631936.

The previous prime is 945378191. The next prime is 945378253. The reversal of 945378199 is 991873549.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 945378199 - 2³ = 945378191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945378191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4872987 + ... + 4873180.

It is an arithmetic number, because the mean of its divisors is an integer number (238781116).

Almost surely, 2^945378199 is an apocalyptic number.

945378199 is a deficient number, since it is larger than the sum of its proper divisors (9746265).

945378199 is an equidigital number, since it uses as much as digits as its factorization.

945378199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9746264.

The product of its digits is 2449440, while the sum is 55.

The square root of 945378199 is about 30747.0030897322. The cubic root of 945378199 is about 981.4507871316.

The spelling of 945378199 in words is "nine hundred forty-five million, three hundred seventy-eight thousand, one hundred ninety-nine".