18132171302 has 32 divisors (see below), whose sum is σ = 32614493184. Its totient is φ = 7391973600.

The previous prime is 18132171301. The next prime is 18132171307. The reversal of 18132171302 is 20317123181.

It is a super-2 number, since 2×18132171302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18132171301) 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, 97274 + ... + 213837.

It is an arithmetic number, because the mean of its divisors is an integer number (1019202912).

Almost surely, 2^18132171302 is an apocalyptic number.

18132171302 is a deficient number, since it is larger than the sum of its proper divisors (14482321882).

18132171302 is a wasteful number, since it uses less digits than its factorization.

18132171302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311324.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 18132171302 its reverse (20317123181), we get a palindrome (38449294483).

The spelling of 18132171302 in words is "eighteen billion, one hundred thirty-two million, one hundred seventy-one thousand, three hundred two".