4419818957 has 4 divisors (see below), whose sum is σ = 4420374780. Its totient is φ = 4419263136.

The previous prime is 4419818939. The next prime is 4419818959. The reversal of 4419818957 is 7598189144.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28238596 + 4391580361 = 5314^2 + 66269^2 .

It is a cyclic number.

It is not a de Polignac number, because 4419818957 - 2⁸ = 4419818701 is a prime.

It is a super-2 number, since 2×4419818957² = 39069599225313135698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4419818959) 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, 265808 + ... + 281945.

It is an arithmetic number, because the mean of its divisors is an integer number (1105093695).

Almost surely, 2^4419818957 is an apocalyptic number.

It is an amenable number.

4419818957 is a deficient number, since it is larger than the sum of its proper divisors (555823).

4419818957 is an equidigital number, since it uses as much as digits as its factorization.

4419818957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555822.

The product of its digits is 2903040, while the sum is 56.

The square root of 4419818957 is about 66481.7189684503. The cubic root of 4419818957 is about 1641.0991735344.

The spelling of 4419818957 in words is "four billion, four hundred nineteen million, eight hundred eighteen thousand, nine hundred fifty-seven".