2194541655 has 8 divisors (see below), whose sum is σ = 3511266672. Its totient is φ = 1170422208.

The previous prime is 2194541653. The next prime is 2194541659. The reversal of 2194541655 is 5561454912.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2194541655 - 2¹ = 2194541653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194541653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73151374 + ... + 73151403.

It is an arithmetic number, because the mean of its divisors is an integer number (438908334).

Almost surely, 2^2194541655 is an apocalyptic number.

2194541655 is a deficient number, since it is larger than the sum of its proper divisors (1316725017).

2194541655 is a wasteful number, since it uses less digits than its factorization.

2194541655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146302785.

The product of its digits is 216000, while the sum is 42.

The square root of 2194541655 is about 46845.9353092667. The cubic root of 2194541655 is about 1299.5149383636.

The spelling of 2194541655 in words is "two billion, one hundred ninety-four million, five hundred forty-one thousand, six hundred fifty-five".