2194128454 has 32 divisors (see below), whose sum is σ = 3828105216. Its totient is φ = 923801760.

The previous prime is 2194128451. The next prime is 2194128467. The reversal of 2194128454 is 4548214912.

2194128454 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 (2194128451) 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, 177144 + ... + 189124.

It is an arithmetic number, because the mean of its divisors is an integer number (119628288).

Almost surely, 2^2194128454 is an apocalyptic number.

2194128454 is a deficient number, since it is larger than the sum of its proper divisors (1633976762).

2194128454 is a wasteful number, since it uses less digits than its factorization.

2194128454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12220.

The product of its digits is 92160, while the sum is 40.

The square root of 2194128454 is about 46841.5248897813. The cubic root of 2194128454 is about 1299.4333731804.

The spelling of 2194128454 in words is "two billion, one hundred ninety-four million, one hundred twenty-eight thousand, four hundred fifty-four".