1642260413 has 2 divisors, whose sum is σ = 1642260414. Its totient is φ = 1642260412.

The previous prime is 1642260379. The next prime is 1642260427. The reversal of 1642260413 is 3140622461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1611380164 + 30880249 = 40142^2 + 5557^2 .

It is a cyclic number.

It is not a de Polignac number, because 1642260413 - 2⁸ = 1642260157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1642260443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821130206 + 821130207.

It is an arithmetic number, because the mean of its divisors is an integer number (821130207).

Almost surely, 2^1642260413 is an apocalyptic number.

It is an amenable number.

1642260413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642260413 is an equidigital number, since it uses as much as digits as its factorization.

1642260413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1642260413 is about 40524.8123129522. The cubic root of 1642260413 is about 1179.8152571546.

Adding to 1642260413 its reverse (3140622461), we get a palindrome (4782882874).

The spelling of 1642260413 in words is "one billion, six hundred forty-two million, two hundred sixty thousand, four hundred thirteen".