4191221560 has 32 divisors (see below), whose sum is σ = 9432093600. Its totient is φ = 1676160640.

The previous prime is 4191221477. The next prime is 4191221561. The reversal of 4191221560 is 651221914.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4191221561) 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, 383370 + ... + 394150.

It is an arithmetic number, because the mean of its divisors is an integer number (294752925).

Almost surely, 2^4191221560 is an apocalyptic number.

4191221560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4191221560 is an abundant number, since it is smaller than the sum of its proper divisors (5240872040).

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

4191221560 is a wasteful number, since it uses less digits than its factorization.

4191221560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20511 (or 20507 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 4191221560 is about 64739.6444228728. The cubic root of 4191221560 is about 1612.3037836681.

It can be divided in two parts, 41 and 91221560, that added together give a square (91221601 = 9551²).

The spelling of 4191221560 in words is "four billion, one hundred ninety-one million, two hundred twenty-one thousand, five hundred sixty".