4921728190 has 32 divisors (see below), whose sum is σ = 9006391296. Its totient is φ = 1936177440.

The previous prime is 4921728181. The next prime is 4921728239. The reversal of 4921728190 is 918271294.

It is a happy number.

It is a super-2 number, since 2×4921728190² = 48446816752481352200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171795 + ... + 198385.

It is an arithmetic number, because the mean of its divisors is an integer number (281449728).

Almost surely, 2^4921728190 is an apocalyptic number.

4921728190 is a deficient number, since it is larger than the sum of its proper divisors (4084663106).

4921728190 is a wasteful number, since it uses less digits than its factorization.

4921728190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26904.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 4921728190 is about 70155.0296842643. The cubic root of 4921728190 is about 1701.0061160792.

The spelling of 4921728190 in words is "four billion, nine hundred twenty-one million, seven hundred twenty-eight thousand, one hundred ninety".