4721873887 has 2 divisors, whose sum is σ = 4721873888. Its totient is φ = 4721873886.

The previous prime is 4721873857. The next prime is 4721873911. The reversal of 4721873887 is 7883781274.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4721873887 - 2⁷ = 4721873759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4721873857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2360936943 + 2360936944.

It is an arithmetic number, because the mean of its divisors is an integer number (2360936944).

Almost surely, 2^4721873887 is an apocalyptic number.

4721873887 is a deficient number, since it is larger than the sum of its proper divisors (1).

4721873887 is an equidigital number, since it uses as much as digits as its factorization.

4721873887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4214784, while the sum is 55.

The square root of 4721873887 is about 68715.8925358610. The cubic root of 4721873887 is about 1677.6632629021.

The spelling of 4721873887 in words is "four billion, seven hundred twenty-one million, eight hundred seventy-three thousand, eight hundred eighty-seven".