8897895981 has 32 divisors (see below), whose sum is σ = 14202021120. Its totient is φ = 5473334592.

The previous prime is 8897895961. The next prime is 8897895983. The reversal of 8897895981 is 1895987988.

It is not a de Polignac number, because 8897895981 - 2⁹ = 8897895469 is a prime.

It is a super-2 number, since 2×8897895981² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8897895983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1268175 + ... + 1275171.

It is an arithmetic number, because the mean of its divisors is an integer number (443813160).

Almost surely, 2^8897895981 is an apocalyptic number.

It is an amenable number.

8897895981 is a deficient number, since it is larger than the sum of its proper divisors (5304125139).

8897895981 is a wasteful number, since it uses less digits than its factorization.

8897895981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10642 (or 10636 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 72.

The square root of 8897895981 is about 94328.6593830316. The cubic root of 8897895981 is about 2072.1877793428.

The spelling of 8897895981 in words is "eight billion, eight hundred ninety-seven million, eight hundred ninety-five thousand, nine hundred eighty-one".