8947630081 has 16 divisors (see below), whose sum is σ = 10146653440. Its totient is φ = 7821878400.

The previous prime is 8947630063. The next prime is 8947630091. The reversal of 8947630081 is 1800367498.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8947630081 - 2¹³ = 8947621889 is a prime.

It is a super-2 number, since 2×8947630081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8947630001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1033336 + ... + 1041958.

It is an arithmetic number, because the mean of its divisors is an integer number (634165840).

It is a Proth number, since it is equal to 68265 ⋅ 2¹⁷ + 1 and 68265 < 2¹⁷.

Almost surely, 2^8947630081 is an apocalyptic number.

8947630081 is the 54613-rd octagonal number.

It is an amenable number.

8947630081 is a deficient number, since it is larger than the sum of its proper divisors (1199023359).

8947630081 is a wasteful number, since it uses less digits than its factorization.

8947630081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 8947630081 is about 94591.9134017280. The cubic root of 8947630081 is about 2076.0413860900.

The spelling of 8947630081 in words is "eight billion, nine hundred forty-seven million, six hundred thirty thousand, eighty-one".