5678418981 has 4 divisors (see below), whose sum is σ = 7571225312. Its totient is φ = 3785612652.

The previous prime is 5678418961. The next prime is 5678418997. The reversal of 5678418981 is 1898148765.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5678418981 - 2²¹ = 5676321829 is a prime.

It is a super-2 number, since 2×5678418981² = 64488884247562156722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5678418961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946403161 + ... + 946403166.

It is an arithmetic number, because the mean of its divisors is an integer number (1892806328).

Almost surely, 2^5678418981 is an apocalyptic number.

It is an amenable number.

5678418981 is a deficient number, since it is larger than the sum of its proper divisors (1892806331).

5678418981 is a wasteful number, since it uses less digits than its factorization.

5678418981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892806330.

The product of its digits is 3870720, while the sum is 57.

The square root of 5678418981 is about 75355.2850236797. The cubic root of 5678418981 is about 1784.0587201953.

The spelling of 5678418981 in words is "five billion, six hundred seventy-eight million, four hundred eighteen thousand, nine hundred eighty-one".