4631218840 has 32 divisors (see below), whose sum is σ = 10968678000. Its totient is φ = 1754987904.

The previous prime is 4631218831. The next prime is 4631218841. The reversal of 4631218840 is 488121364.

It is a self number, because there is not a number n which added to its sum of digits gives 4631218840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4631218841) 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, 3046095 + ... + 3047614.

Almost surely, 2^4631218840 is an apocalyptic number.

4631218840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4631218840 is an abundant number, since it is smaller than the sum of its proper divisors (6337459160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4631218840 is a wasteful number, since it uses less digits than its factorization.

4631218840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093739 (or 6093735 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 4631218840 is about 68053.0590054554. The cubic root of 4631218840 is about 1666.8573500942.

The spelling of 4631218840 in words is "four billion, six hundred thirty-one million, two hundred eighteen thousand, eight hundred forty".