1842642563 has 4 divisors (see below), whose sum is σ = 1951033320. Its totient is φ = 1734251808.

The previous prime is 1842642559. The next prime is 1842642601. The reversal of 1842642563 is 3652462481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1842642563 - 2² = 1842642559 is a prime.

It is a super-2 number, since 2×1842642563² = 6790663229958417938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1842642563.

It is not an unprimeable number, because it can be changed into a prime (1842642163) 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, 54195353 + ... + 54195386.

It is an arithmetic number, because the mean of its divisors is an integer number (487758330).

Almost surely, 2^1842642563 is an apocalyptic number.

1842642563 is a deficient number, since it is larger than the sum of its proper divisors (108390757).

1842642563 is a wasteful number, since it uses less digits than its factorization.

1842642563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108390756.

The product of its digits is 276480, while the sum is 41.

The square root of 1842642563 is about 42926.0126613223. The cubic root of 1842642563 is about 1225.9714771592.

The spelling of 1842642563 in words is "one billion, eight hundred forty-two million, six hundred forty-two thousand, five hundred sixty-three".