9729673951 has 2 divisors, whose sum is σ = 9729673952. Its totient is φ = 9729673950.

The previous prime is 9729673927. The next prime is 9729673973. The reversal of 9729673951 is 1593769279.

It is a strong prime.

It is an emirp because it is prime and its reverse (1593769279) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9729673951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9729673901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4864836975 + 4864836976.

It is an arithmetic number, because the mean of its divisors is an integer number (4864836976).

Almost surely, 2^9729673951 is an apocalyptic number.

9729673951 is a deficient number, since it is larger than the sum of its proper divisors (1).

9729673951 is an equidigital number, since it uses as much as digits as its factorization.

9729673951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6429780, while the sum is 58.

The square root of 9729673951 is about 98639.1096421698. The cubic root of 9729673951 is about 2134.8437564070.

The spelling of 9729673951 in words is "nine billion, seven hundred twenty-nine million, six hundred seventy-three thousand, nine hundred fifty-one".