7830020161 has 2 divisors, whose sum is σ = 7830020162. Its totient is φ = 7830020160.

The previous prime is 7830020101. The next prime is 7830020183. The reversal of 7830020161 is 1610200387.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7238606400 + 591413761 = 85080^2 + 24319^2 .

It is an emirp because it is prime and its reverse (1610200387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7830020161 - 2¹⁵ = 7829987393 is a prime.

It is a super-2 number, since 2×7830020161² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7830020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3915010080 + 3915010081.

It is an arithmetic number, because the mean of its divisors is an integer number (3915010081).

Almost surely, 2^7830020161 is an apocalyptic number.

It is an amenable number.

7830020161 is a deficient number, since it is larger than the sum of its proper divisors (1).

7830020161 is an equidigital number, since it uses as much as digits as its factorization.

7830020161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 7830020161 is about 88487.4011427616. The cubic root of 7830020161 is about 1985.7334887205.

The spelling of 7830020161 in words is "seven billion, eight hundred thirty million, twenty thousand, one hundred sixty-one".