1674945939 has 4 divisors (see below), whose sum is σ = 2233261256. Its totient is φ = 1116630624.

The previous prime is 1674945917. The next prime is 1674945947. The reversal of 1674945939 is 9395494761.

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

It is not a de Polignac number, because 1674945939 - 2⁹ = 1674945427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1674945949) 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 in 3 ways as a sum of consecutive naturals, for example, 279157654 + ... + 279157659.

It is an arithmetic number, because the mean of its divisors is an integer number (558315314).

Almost surely, 2^1674945939 is an apocalyptic number.

1674945939 is a deficient number, since it is larger than the sum of its proper divisors (558315317).

1674945939 is an equidigital number, since it uses as much as digits as its factorization.

1674945939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558315316.

The product of its digits is 7348320, while the sum is 57.

The square root of 1674945939 is about 40926.1033937999. The cubic root of 1674945939 is about 1187.5910921664.

The spelling of 1674945939 in words is "one billion, six hundred seventy-four million, nine hundred forty-five thousand, nine hundred thirty-nine".