18355434141 has 16 divisors (see below), whose sum is σ = 26774464320. Its totient is φ = 11092984320.

The previous prime is 18355434131. The next prime is 18355434143. The reversal of 18355434141 is 14143455381.

It is not a de Polignac number, because 18355434141 - 2²³ = 18347045533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18355434141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18355434143) 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, 776206 + ... + 799503.

It is an arithmetic number, because the mean of its divisors is an integer number (1673404020).

Almost surely, 2^18355434141 is an apocalyptic number.

18355434141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18355434141 is a deficient number, since it is larger than the sum of its proper divisors (8419030179).

18355434141 is a wasteful number, since it uses less digits than its factorization.

18355434141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576076.

The product of its digits is 115200, while the sum is 39.

The spelling of 18355434141 in words is "eighteen billion, three hundred fifty-five million, four hundred thirty-four thousand, one hundred forty-one".