2191445102 has 32 divisors (see below), whose sum is σ = 4209062400. Its totient is φ = 830731680.

The previous prime is 2191445101. The next prime is 2191445111. The reversal of 2191445102 is 2015441912.

2191445102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191445101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186602 + ... + 197997.

It is an arithmetic number, because the mean of its divisors is an integer number (131533200).

Almost surely, 2^2191445102 is an apocalyptic number.

2191445102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2191445102 is a deficient number, since it is larger than the sum of its proper divisors (2017617298).

2191445102 is a wasteful number, since it uses less digits than its factorization.

2191445102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384656.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2191445102 is about 46812.8732508484. The cubic root of 2191445102 is about 1298.9034346631.

The spelling of 2191445102 in words is "two billion, one hundred ninety-one million, four hundred forty-five thousand, one hundred two".