9550761985 has 4 divisors (see below), whose sum is σ = 11460914388. Its totient is φ = 7640609584.

The previous prime is 9550761953. The next prime is 9550762019. The reversal of 9550761985 is 5891670559.

It is a Cunningham number, because it is equal to 97728²+1.

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 3438180496 + 6112581489 = 58636^2 + 78183^2 .

It is a cyclic number.

It is not a de Polignac number, because 9550761985 - 2⁵ = 9550761953 is a prime.

It is a super-2 number, since 2×9550761985² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955076194 + ... + 955076203.

It is an arithmetic number, because the mean of its divisors is an integer number (2865228597).

Almost surely, 2^9550761985 is an apocalyptic number.

It is an amenable number.

9550761985 is a deficient number, since it is larger than the sum of its proper divisors (1910152403).

9550761985 is a wasteful number, since it uses less digits than its factorization.

9550761985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910152402.

The product of its (nonzero) digits is 3402000, while the sum is 55.

The square root of 9550761985 is about 97728.0000051162. Note that the first 5 decimals coincide. The cubic root of 9550761985 is about 2121.6773530272.

The spelling of 9550761985 in words is "nine billion, five hundred fifty million, seven hundred sixty-one thousand, nine hundred eighty-five".