7090023781 has 2 divisors, whose sum is σ = 7090023782. Its totient is φ = 7090023780.

The previous prime is 7090023761. The next prime is 7090023799. The reversal of 7090023781 is 1873200907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4954752100 + 2135271681 = 70390^2 + 46209^2 .

It is a cyclic number.

It is not a de Polignac number, because 7090023781 - 2¹⁹ = 7089499493 is a prime.

It is a super-2 number, since 2×7090023781² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7090023781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7090023751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3545011890 + 3545011891.

It is an arithmetic number, because the mean of its divisors is an integer number (3545011891).

Almost surely, 2^7090023781 is an apocalyptic number.

It is an amenable number.

7090023781 is a deficient number, since it is larger than the sum of its proper divisors (1).

7090023781 is an equidigital number, since it uses as much as digits as its factorization.

7090023781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 7090023781 is about 84202.2789537195. The cubic root of 7090023781 is about 1921.0967205202.

The spelling of 7090023781 in words is "seven billion, ninety million, twenty-three thousand, seven hundred eighty-one".