1979458207 has 4 divisors (see below), whose sum is σ = 2004514720. Its totient is φ = 1954401696.

The previous prime is 1979458199. The next prime is 1979458211. The reversal of 1979458207 is 7028549791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7028549791 = 53 ⋅132614147.

It is a cyclic number.

It is not a de Polignac number, because 1979458207 - 2³ = 1979458199 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 (1979458237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12528138 + ... + 12528295.

It is an arithmetic number, because the mean of its divisors is an integer number (501128680).

Almost surely, 2^1979458207 is an apocalyptic number.

1979458207 is a deficient number, since it is larger than the sum of its proper divisors (25056513).

1979458207 is an equidigital number, since it uses as much as digits as its factorization.

1979458207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25056512.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 1979458207 is about 44491.1025599501. The cubic root of 1979458207 is about 1255.5926909547.

The spelling of 1979458207 in words is "one billion, nine hundred seventy-nine million, four hundred fifty-eight thousand, two hundred seven".