4188390469 has 2 divisors, whose sum is σ = 4188390470. Its totient is φ = 4188390468.

The previous prime is 4188390467. The next prime is 4188390523. The reversal of 4188390469 is 9640938814.

It is a happy number.

4188390469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3911001444 + 277389025 = 62538^2 + 16655^2 .

It is a cyclic number.

It is not a de Polignac number, because 4188390469 - 2¹ = 4188390467 is a prime.

It is a super-2 number, since 2×4188390469² = 35085229441620079922, which contains 22 as substring.

Together with 4188390467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4188390467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2094195234 + 2094195235.

It is an arithmetic number, because the mean of its divisors is an integer number (2094195235).

Almost surely, 2^4188390469 is an apocalyptic number.

It is an amenable number.

4188390469 is a deficient number, since it is larger than the sum of its proper divisors (1).

4188390469 is an equidigital number, since it uses as much as digits as its factorization.

4188390469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 4188390469 is about 64717.7755257394. The cubic root of 4188390469 is about 1611.9406749806.

The spelling of 4188390469 in words is "four billion, one hundred eighty-eight million, three hundred ninety thousand, four hundred sixty-nine".