4921555390 has 16 divisors (see below), whose sum is σ = 8862714432. Its totient is φ = 1967752224.

The previous prime is 4921555367. The next prime is 4921555399. The reversal of 4921555390 is 935551294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921555399) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 84729 + ... + 130468.

It is an arithmetic number, because the mean of its divisors is an integer number (553919652).

Almost surely, 2^4921555390 is an apocalyptic number.

4921555390 is a deficient number, since it is larger than the sum of its proper divisors (3941159042).

4921555390 is a wasteful number, since it uses less digits than its factorization.

4921555390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217491.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 4921555390 is about 70153.7981152838. The cubic root of 4921555390 is about 1700.9862086209.

The spelling of 4921555390 in words is "four billion, nine hundred twenty-one million, five hundred fifty-five thousand, three hundred ninety".