1640473332 has 24 divisors (see below), whose sum is σ = 3829426272. Its totient is φ = 546588000.

The previous prime is 1640473313. The next prime is 1640473333. The reversal of 1640473332 is 2333740461.

1640473332 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1640473293 and 1640473302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640473333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582 + ... + 57282.

It is an arithmetic number, because the mean of its divisors is an integer number (159559428).

Almost surely, 2^1640473332 is an apocalyptic number.

1640473332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1640473332 is an abundant number, since it is smaller than the sum of its proper divisors (2188952940).

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

1640473332 is a wasteful number, since it uses less digits than its factorization.

1640473332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59119 (or 59117 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 33.

The square root of 1640473332 is about 40502.7570913389. The cubic root of 1640473332 is about 1179.3871499230.

The spelling of 1640473332 in words is "one billion, six hundred forty million, four hundred seventy-three thousand, three hundred thirty-two".