1640713341 has 4 divisors (see below), whose sum is σ = 2187617792. Its totient is φ = 1093808892.

The previous prime is 1640713337. The next prime is 1640713379. The reversal of 1640713341 is 1433170461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1433170461 = 3 ⋅477723487.

It is not a de Polignac number, because 1640713341 - 2² = 1640713337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1640713299 and 1640713308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640713391) 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 3 ways as a sum of consecutive naturals, for example, 273452221 + ... + 273452226.

It is an arithmetic number, because the mean of its divisors is an integer number (546904448).

Almost surely, 2^1640713341 is an apocalyptic number.

It is an amenable number.

1640713341 is a deficient number, since it is larger than the sum of its proper divisors (546904451).

1640713341 is an equidigital number, since it uses as much as digits as its factorization.

1640713341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546904450.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1640713341 is about 40505.7198553488. The cubic root of 1640713341 is about 1179.4446637559. Note that the first 3 decimals are identical.

The spelling of 1640713341 in words is "one billion, six hundred forty million, seven hundred thirteen thousand, three hundred forty-one".