7107461981 has 2 divisors, whose sum is σ = 7107461982. Its totient is φ = 7107461980.

The previous prime is 7107461953. The next prime is 7107462077. The reversal of 7107461981 is 1891647017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4523773081 + 2583688900 = 67259^2 + 50830^2 .

It is a cyclic number.

It is not a de Polignac number, because 7107461981 - 2¹⁸ = 7107199837 is a prime.

It is a super-2 number, since 2×7107461981² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7107461951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3553730990 + 3553730991.

It is an arithmetic number, because the mean of its divisors is an integer number (3553730991).

Almost surely, 2^7107461981 is an apocalyptic number.

It is an amenable number.

7107461981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7107461981 is an equidigital number, since it uses as much as digits as its factorization.

7107461981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 7107461981 is about 84305.7648147504. The cubic root of 7107461981 is about 1922.6704360243.

The spelling of 7107461981 in words is "seven billion, one hundred seven million, four hundred sixty-one thousand, nine hundred eighty-one".