1979487518 has 8 divisors (see below), whose sum is σ = 2990904912. Its totient is φ = 982519216.

The previous prime is 1979487449. The next prime is 1979487527. The reversal of 1979487518 is 8157849791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 3611930 + ... + 3612477.

It is an arithmetic number, because the mean of its divisors is an integer number (373863114).

Almost surely, 2^1979487518 is an apocalyptic number.

1979487518 is a deficient number, since it is larger than the sum of its proper divisors (1011417394).

1979487518 is a wasteful number, since it uses less digits than its factorization.

1979487518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7224546.

The product of its digits is 5080320, while the sum is 59.

The square root of 1979487518 is about 44491.4319616710. The cubic root of 1979487518 is about 1255.5988883569.

The spelling of 1979487518 in words is "one billion, nine hundred seventy-nine million, four hundred eighty-seven thousand, five hundred eighteen".