18129161432 has 16 divisors (see below), whose sum is σ = 34910885760. Its totient is φ = 8819591904.

The previous prime is 18129161431. The next prime is 18129161459. The reversal of 18129161432 is 23416192181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18129161431) 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, 30623288 + ... + 30623879.

It is an arithmetic number, because the mean of its divisors is an integer number (2181930360).

Almost surely, 2^18129161432 is an apocalyptic number.

It is an amenable number.

18129161432 is a deficient number, since it is larger than the sum of its proper divisors (16781724328).

18129161432 is a wasteful number, since it uses less digits than its factorization.

18129161432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61247210 (or 61247206 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The spelling of 18129161432 in words is "eighteen billion, one hundred twenty-nine million, one hundred sixty-one thousand, four hundred thirty-two".