2194634421 has 48 divisors (see below), whose sum is σ = 3766239360. Its totient is φ = 1204882560.

The previous prime is 2194634399. The next prime is 2194634423. The reversal of 2194634421 is 1244364912.

2194634421 is a `hidden beast` number, since 2 + 19 + 4 + 634 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 2194634421 - 2⁵ = 2194634389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194634423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 382651 + ... + 388343.

It is an arithmetic number, because the mean of its divisors is an integer number (78463320).

Almost surely, 2^2194634421 is an apocalyptic number.

2194634421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2194634421 is a deficient number, since it is larger than the sum of its proper divisors (1571604939).

2194634421 is a wasteful number, since it uses less digits than its factorization.

2194634421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946 (or 5943 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2194634421 is about 46846.9254167229. The cubic root of 2194634421 is about 1299.5332488088.

The spelling of 2194634421 in words is "two billion, one hundred ninety-four million, six hundred thirty-four thousand, four hundred twenty-one".