961923517 has 2 divisors, whose sum is σ = 961923518. Its totient is φ = 961923516.

The previous prime is 961923463. The next prime is 961923569. The reversal of 961923517 is 715329169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 573794116 + 388129401 = 23954^2 + 19701^2 .

It is an emirp because it is prime and its reverse (715329169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 961923517 - 2¹¹ = 961921469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961923217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480961758 + 480961759.

It is an arithmetic number, because the mean of its divisors is an integer number (480961759).

Almost surely, 2^961923517 is an apocalyptic number.

It is an amenable number.

961923517 is a deficient number, since it is larger than the sum of its proper divisors (1).

961923517 is an equidigital number, since it uses as much as digits as its factorization.

961923517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 43.

The square root of 961923517 is about 31014.8918585895. The cubic root of 961923517 is about 987.1432514052.

The spelling of 961923517 in words is "nine hundred sixty-one million, nine hundred twenty-three thousand, five hundred seventeen".