1640348052 has 48 divisors (see below), whose sum is σ = 4604490240. Its totient is φ = 444003552.

The previous prime is 1640348051. The next prime is 1640348077. The reversal of 1640348052 is 2508430461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640348051) 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, 512298 + ... + 515489.

It is an arithmetic number, because the mean of its divisors is an integer number (95926880).

Almost surely, 2^1640348052 is an apocalyptic number.

1640348052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1640348052 is an abundant number, since it is smaller than the sum of its proper divisors (2964142188).

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

1640348052 is a wasteful number, since it uses less digits than its factorization.

1640348052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027820 (or 1027818 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1640348052 is about 40501.2105004283. The cubic root of 1640348052 is about 1179.3571265998.

The spelling of 1640348052 in words is "one billion, six hundred forty million, three hundred forty-eight thousand, fifty-two".