1807741421 has 2 divisors, whose sum is σ = 1807741422. Its totient is φ = 1807741420.

The previous prime is 1807741387. The next prime is 1807741447. The reversal of 1807741421 is 1241477081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795216900 + 12524521 = 42370^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1807741421 - 2⁶ = 1807741357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1807741021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903870710 + 903870711.

It is an arithmetic number, because the mean of its divisors is an integer number (903870711).

Almost surely, 2^1807741421 is an apocalyptic number.

It is an amenable number.

1807741421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1807741421 is an equidigital number, since it uses as much as digits as its factorization.

1807741421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 1807741421 is about 42517.5425089456. The cubic root of 1807741421 is about 1218.1817897202.

The spelling of 1807741421 in words is "one billion, eight hundred seven million, seven hundred forty-one thousand, four hundred twenty-one".