18446796229 has 4 divisors (see below), whose sum is σ = 18636969484. Its totient is φ = 18256622976.

The previous prime is 18446796187. The next prime is 18446796259. The reversal of 18446796229 is 92269764481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92269764481 = 3557 ⋅25940333.

It can be written as a sum of positive squares in 2 ways, for example, as 7503544129 + 10943252100 = 86623^2 + 104610^2 .

It is not a de Polignac number, because 18446796229 - 2¹³ = 18446788037 is a prime.

It is a super-2 number, since 2×18446796229² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18446796259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95086482 + ... + 95086675.

It is an arithmetic number, because the mean of its divisors is an integer number (4659242371).

Almost surely, 2^18446796229 is an apocalyptic number.

It is an amenable number.

18446796229 is a deficient number, since it is larger than the sum of its proper divisors (190173255).

18446796229 is an equidigital number, since it uses as much as digits as its factorization.

18446796229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190173254.

The product of its digits is 10450944, while the sum is 58.

It can be divided in two parts, 18446796 and 229, that added together give a square (18447025 = 4295²).

The spelling of 18446796229 in words is "eighteen billion, four hundred forty-six million, seven hundred ninety-six thousand, two hundred twenty-nine".