1642647032 has 64 divisors (see below), whose sum is σ = 3547152000. Its totient is φ = 706406400.

The previous prime is 1642647031. The next prime is 1642647043. The reversal of 1642647032 is 2307462461.

It is a junction number, because it is equal to n+sod(n) for n = 1642646983 and 1642647001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642647031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173969 + ... + 183167.

It is an arithmetic number, because the mean of its divisors is an integer number (55424250).

Almost surely, 2^1642647032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642647032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1773576000).

1642647032 is an abundant number, since it is smaller than the sum of its proper divisors (1904504968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1642647032 is a wasteful number, since it uses less digits than its factorization.

1642647032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9336 (or 9332 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 1642647032 is about 40529.5821838814. The cubic root of 1642647032 is about 1179.9078334601.

The spelling of 1642647032 in words is "one billion, six hundred forty-two million, six hundred forty-seven thousand, thirty-two".