1642316405 has 16 divisors (see below), whose sum is σ = 2001710064. Its totient is φ = 1293304320.

The previous prime is 1642316393. The next prime is 1642316413. The reversal of 1642316405 is 5046132461.

It can be written as a sum of positive squares in 8 ways, for example, as 91374481 + 1550941924 = 9559^2 + 39382^2 .

It is not a de Polignac number, because 1642316405 - 2⁶ = 1642316341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193307 + ... + 201623.

It is an arithmetic number, because the mean of its divisors is an integer number (125106879).

Almost surely, 2^1642316405 is an apocalyptic number.

It is an amenable number.

1642316405 is a deficient number, since it is larger than the sum of its proper divisors (359393659).

1642316405 is an equidigital number, since it uses as much as digits as its factorization.

1642316405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8936.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1642316405 is about 40525.5031430826. The cubic root of 1642316405 is about 1179.8286653946.

Adding to 1642316405 its reverse (5046132461), we get a palindrome (6688448866).

The spelling of 1642316405 in words is "one billion, six hundred forty-two million, three hundred sixteen thousand, four hundred five".