1942917517 has 4 divisors (see below), whose sum is σ = 1944983196. Its totient is φ = 1940851840.

The previous prime is 1942917511. The next prime is 1942917521. The reversal of 1942917517 is 7157192491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1119170116 + 823747401 = 33454^2 + 28701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1942917517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942917511) 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 in 3 ways as a sum of consecutive naturals, for example, 1031428 + ... + 1033309.

It is an arithmetic number, because the mean of its divisors is an integer number (486245799).

Almost surely, 2^1942917517 is an apocalyptic number.

It is an amenable number.

1942917517 is a deficient number, since it is larger than the sum of its proper divisors (2065679).

1942917517 is an equidigital number, since it uses as much as digits as its factorization.

1942917517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065678.

The product of its digits is 158760, while the sum is 46.

The square root of 1942917517 is about 44078.5380542504. The cubic root of 1942917517 is about 1247.8185990330.

The spelling of 1942917517 in words is "one billion, nine hundred forty-two million, nine hundred seventeen thousand, five hundred seventeen".