1642365434 has 8 divisors (see below), whose sum is σ = 2593208640. Its totient is φ = 777962556.

The previous prime is 1642365421. The next prime is 1642365437. The reversal of 1642365434 is 4345632461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 43220143 = 1642365434 / (1 + 6 + 4 + 2 + 3 + 6 + 5 + 4 + 3 + 4).

It is not an unprimeable number, because it can be changed into a prime (1642365437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21610034 + ... + 21610109.

It is an arithmetic number, because the mean of its divisors is an integer number (324151080).

Almost surely, 2^1642365434 is an apocalyptic number.

1642365434 is a deficient number, since it is larger than the sum of its proper divisors (950843206).

1642365434 is a wasteful number, since it uses less digits than its factorization.

1642365434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43220164.

The product of its digits is 207360, while the sum is 38.

The square root of 1642365434 is about 40526.1080539447. The cubic root of 1642365434 is about 1179.8404059751.

Adding to 1642365434 its reverse (4345632461), we get a palindrome (5987997895).

The spelling of 1642365434 in words is "one billion, six hundred forty-two million, three hundred sixty-five thousand, four hundred thirty-four".