7938897061 has 2 divisors, whose sum is σ = 7938897062. Its totient is φ = 7938897060.

The previous prime is 7938897047. The next prime is 7938897101. The reversal of 7938897061 is 1607988397.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7483288036 + 455609025 = 86506^2 + 21345^2 .

It is a cyclic number.

It is not a de Polignac number, because 7938897061 - 2¹⁹ = 7938372773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7938896987 and 7938897005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7938897361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3969448530 + 3969448531.

It is an arithmetic number, because the mean of its divisors is an integer number (3969448531).

Almost surely, 2^7938897061 is an apocalyptic number.

It is an amenable number.

7938897061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7938897061 is an equidigital number, since it uses as much as digits as its factorization.

7938897061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The square root of 7938897061 is about 89100.4885564608. The cubic root of 7938897061 is about 1994.8950693445.

The spelling of 7938897061 in words is "seven billion, nine hundred thirty-eight million, eight hundred ninety-seven thousand, sixty-one".