9774466981 has 8 divisors (see below), whose sum is σ = 9872693600. Its totient is φ = 9676396080.

The previous prime is 9774466973. The next prime is 9774466987. The reversal of 9774466981 is 1896644779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9774466981 - 2³ = 9774466973 is a prime.

It is a super-2 number, since 2×9774466981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9774466987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89350 + ... + 165928.

It is an arithmetic number, because the mean of its divisors is an integer number (1234086700).

Almost surely, 2^9774466981 is an apocalyptic number.

It is an amenable number.

9774466981 is a deficient number, since it is larger than the sum of its proper divisors (98226619).

9774466981 is a wasteful number, since it uses less digits than its factorization.

9774466981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77859.

The product of its digits is 18289152, while the sum is 61.

The square root of 9774466981 is about 98865.9040367305. The cubic root of 9774466981 is about 2138.1148406074.

The spelling of 9774466981 in words is "nine billion, seven hundred seventy-four million, four hundred sixty-six thousand, nine hundred eighty-one".