1640353341 has 32 divisors (see below), whose sum is σ = 2569190400. Its totient is φ = 919796480.

The previous prime is 1640353333. The next prime is 1640353349. The reversal of 1640353341 is 1433530461.

It is an interprime number because it is at equal distance from previous prime (1640353333) and next prime (1640353349).

It is a cyclic number.

It is not a de Polignac number, because 1640353341 - 2³ = 1640353333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1640353299 and 1640353308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640353349) 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 31 ways as a sum of consecutive naturals, for example, 8320 + ... + 57878.

It is an arithmetic number, because the mean of its divisors is an integer number (80287200).

Almost surely, 2^1640353341 is an apocalyptic number.

1640353341 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1640353341 is a deficient number, since it is larger than the sum of its proper divisors (928837059).

1640353341 is a wasteful number, since it uses less digits than its factorization.

1640353341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49649.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 1640353341 is about 40501.2757947203. The cubic root of 1640353341 is about 1179.3583941383.

The spelling of 1640353341 in words is "one billion, six hundred forty million, three hundred fifty-three thousand, three hundred forty-one".