4721081091 has 4 divisors (see below), whose sum is σ = 6294774792. Its totient is φ = 3147387392.

The previous prime is 4721081081. The next prime is 4721081111. The reversal of 4721081091 is 1901801274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4721081091 - 2¹¹ = 4721079043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4721081011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786846846 + ... + 786846851.

It is an arithmetic number, because the mean of its divisors is an integer number (1573693698).

Almost surely, 2^4721081091 is an apocalyptic number.

4721081091 is a deficient number, since it is larger than the sum of its proper divisors (1573693701).

4721081091 is a wasteful number, since it uses less digits than its factorization.

4721081091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573693700.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 4721081091 is about 68710.1236427355. The cubic root of 4721081091 is about 1677.5693652109.

The spelling of 4721081091 in words is "four billion, seven hundred twenty-one million, eighty-one thousand, ninety-one".