4897609981 has 8 divisors (see below), whose sum is σ = 5375627424. Its totient is φ = 4425055920.

The previous prime is 4897609939. The next prime is 4897609991. The reversal of 4897609981 is 1899067984.

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 4897609981 - 2⁷ = 4897609853 is a prime.

It is a super-2 number, since 2×4897609981² = 47973167051981640722, which 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 (4897609921) 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, 1363966 + ... + 1367551.

It is an arithmetic number, because the mean of its divisors is an integer number (671953428).

Almost surely, 2^4897609981 is an apocalyptic number.

It is an amenable number.

4897609981 is a deficient number, since it is larger than the sum of its proper divisors (478017443).

4897609981 is a wasteful number, since it uses less digits than its factorization.

4897609981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731691.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The square root of 4897609981 is about 69982.9263535043. The cubic root of 4897609981 is about 1698.2230545769.

The spelling of 4897609981 in words is "four billion, eight hundred ninety-seven million, six hundred nine thousand, nine hundred eighty-one".