1648831039 has 6 divisors (see below), whose sum is σ = 1740179400. Its totient is φ = 1562050116.

The previous prime is 1648831021. The next prime is 1648831043. The reversal of 1648831039 is 9301388461.

It is not a de Polignac number, because 1648831039 - 2²¹ = 1646733887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1648830986 and 1648831004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648831049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2283339 + ... + 2284060.

It is an arithmetic number, because the mean of its divisors is an integer number (290029900).

Almost surely, 2^1648831039 is an apocalyptic number.

1648831039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1648831039 is a deficient number, since it is larger than the sum of its proper divisors (91348361).

1648831039 is an equidigital number, since it uses as much as digits as its factorization.

1648831039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567437 (or 4567418 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 1648831039 is about 40605.8005585409. The cubic root of 1648831039 is about 1181.3866297584.

The spelling of 1648831039 in words is "one billion, six hundred forty-eight million, eight hundred thirty-one thousand, thirty-nine".