2191925010 has 64 divisors (see below), whose sum is σ = 5817536640. Its totient is φ = 524090880.

The previous prime is 2191924997. The next prime is 2191925011. The reversal of 2191925010 is 105291912.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2191925011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21405 + ... + 69584.

It is an arithmetic number, because the mean of its divisors is an integer number (90899010).

Almost surely, 2^2191925010 is an apocalyptic number.

2191925010 is an abundant number, since it is smaller than the sum of its proper divisors (3625611630).

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

2191925010 is a wasteful number, since it uses less digits than its factorization.

2191925010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91083.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 2191925010 is about 46817.9987825195. The cubic root of 2191925010 is about 1298.9982440428.

The spelling of 2191925010 in words is "two billion, one hundred ninety-one million, nine hundred twenty-five thousand, ten".