1648979842 has 8 divisors (see below), whose sum is σ = 2477546496. Its totient is φ = 823131012.

The previous prime is 1648979837. The next prime is 1648979881. The reversal of 1648979842 is 2489798461.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677938 + ... + 680365.

It is an arithmetic number, because the mean of its divisors is an integer number (309693312).

Almost surely, 2^1648979842 is an apocalyptic number.

1648979842 is a deficient number, since it is larger than the sum of its proper divisors (828566654).

1648979842 is a wasteful number, since it uses less digits than its factorization.

1648979842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358912.

The product of its digits is 6967296, while the sum is 58.

The square root of 1648979842 is about 40607.6328046834. The cubic root of 1648979842 is about 1181.4221677815.

The spelling of 1648979842 in words is "one billion, six hundred forty-eight million, nine hundred seventy-nine thousand, eight hundred forty-two".