2043478813 has 2 divisors, whose sum is σ = 2043478814. Its totient is φ = 2043478812.

The previous prime is 2043478807. The next prime is 2043478847. The reversal of 2043478813 is 3188743402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1422572089 + 620906724 = 37717^2 + 24918^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043478813 - 2⁵ = 2043478781 is a prime.

It is a super-4 number, since 4×2043478813⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043473813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021739406 + 1021739407.

It is an arithmetic number, because the mean of its divisors is an integer number (1021739407).

Almost surely, 2^2043478813 is an apocalyptic number.

It is an amenable number.

2043478813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043478813 is an equidigital number, since it uses as much as digits as its factorization.

2043478813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 2043478813 is about 45204.8538654866. The cubic root of 2043478813 is about 1268.9856560562.

The spelling of 2043478813 in words is "two billion, forty-three million, four hundred seventy-eight thousand, eight hundred thirteen".