1979194245 has 32 divisors (see below), whose sum is σ = 3627244800. Its totient is φ = 902737920.

The previous prime is 1979194219. The next prime is 1979194253. The reversal of 1979194245 is 5424919791.

It is not a de Polignac number, because 1979194245 - 2⁶ = 1979194181 is a prime.

It is a super-2 number, since 2×1979194245² = 7834419718882240050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 26155 + ... + 68135.

It is an arithmetic number, because the mean of its divisors is an integer number (113351400).

Almost surely, 2^1979194245 is an apocalyptic number.

1979194245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1979194245 is a deficient number, since it is larger than the sum of its proper divisors (1648050555).

1979194245 is a wasteful number, since it uses less digits than its factorization.

1979194245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42445.

The product of its digits is 816480, while the sum is 51.

The square root of 1979194245 is about 44488.1360027592. The cubic root of 1979194245 is about 1255.5368771147.

The spelling of 1979194245 in words is "one billion, nine hundred seventy-nine million, one hundred ninety-four thousand, two hundred forty-five".