4640781870 has 32 divisors (see below), whose sum is σ = 12375419040. Its totient is φ = 1237541760.

The previous prime is 4640781799. The next prime is 4640781947. The reversal of 4640781870 is 781870464.

4640781870 is a `hidden beast` number, since 464 + 0 + 7 + 8 + 187 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8593771 + ... + 8594310.

It is an arithmetic number, because the mean of its divisors is an integer number (386731845).

Almost surely, 2^4640781870 is an apocalyptic number.

4640781870 is an abundant number, since it is smaller than the sum of its proper divisors (7734637170).

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

4640781870 is a wasteful number, since it uses less digits than its factorization.

4640781870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17188097 (or 17188091 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 4640781870 is about 68123.2843453690. The cubic root of 4640781870 is about 1668.0038623688.

The spelling of 4640781870 in words is "four billion, six hundred forty million, seven hundred eighty-one thousand, eight hundred seventy".