20144342194 has 16 divisors (see below), whose sum is σ = 30586429440. Its totient is φ = 9948912400.

The previous prime is 20144342173. The next prime is 20144342201. The reversal of 20144342194 is 49124344102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1303887 + ... + 1319245.

It is an arithmetic number, because the mean of its divisors is an integer number (1911651840).

Almost surely, 2^20144342194 is an apocalyptic number.

20144342194 is a deficient number, since it is larger than the sum of its proper divisors (10442087246).

20144342194 is a wasteful number, since it uses less digits than its factorization.

20144342194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23345.

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 20144342194 its reverse (49124344102), we get a palindrome (69268686296).

The spelling of 20144342194 in words is "twenty billion, one hundred forty-four million, three hundred forty-two thousand, one hundred ninety-four".