4118961421 has 2 divisors, whose sum is σ = 4118961422. Its totient is φ = 4118961420.

The previous prime is 4118961367. The next prime is 4118961461. The reversal of 4118961421 is 1241698114.

4118961421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3004136100 + 1114825321 = 54810^2 + 33389^2 .

It is a cyclic number.

It is not a de Polignac number, because 4118961421 - 2⁷ = 4118961293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4118961461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2059480710 + 2059480711.

It is an arithmetic number, because the mean of its divisors is an integer number (2059480711).

Almost surely, 2^4118961421 is an apocalyptic number.

It is an amenable number.

4118961421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4118961421 is an equidigital number, since it uses as much as digits as its factorization.

4118961421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 37.

The square root of 4118961421 is about 64179.1354024032. The cubic root of 4118961421 is about 1602.9841989967.

The spelling of 4118961421 in words is "four billion, one hundred eighteen million, nine hundred sixty-one thousand, four hundred twenty-one".