1648028879 has 16 divisors (see below), whose sum is σ = 1944983040. Its totient is φ = 1367059680.

The previous prime is 1648028857. The next prime is 1648028881. The reversal of 1648028879 is 9788208461.

It is a happy number.

It is not a de Polignac number, because 1648028879 - 2²⁰ = 1646980303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1648028879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648024879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7694 + ... + 57924.

It is an arithmetic number, because the mean of its divisors is an integer number (121561440).

Almost surely, 2^1648028879 is an apocalyptic number.

1648028879 is a deficient number, since it is larger than the sum of its proper divisors (296954161).

1648028879 is a wasteful number, since it uses less digits than its factorization.

1648028879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50390.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 1648028879 is about 40595.9219503634. The cubic root of 1648028879 is about 1181.1950162662.

The spelling of 1648028879 in words is "one billion, six hundred forty-eight million, twenty-eight thousand, eight hundred seventy-nine".