18130429878 has 32 divisors (see below), whose sum is σ = 39563258112. Its totient is φ = 5493242400.

The previous prime is 18130429861. The next prime is 18130429879. The reversal of 18130429878 is 87892403181.

It is a super-2 number, since 2×18130429878² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18130429878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18130429879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532000 + ... + 565052.

It is an arithmetic number, because the mean of its divisors is an integer number (1236351816).

Almost surely, 2^18130429878 is an apocalyptic number.

18130429878 is an abundant number, since it is smaller than the sum of its proper divisors (21432828234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18130429878 is a wasteful number, since it uses less digits than its factorization.

18130429878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41380.

The product of its (nonzero) digits is 774144, while the sum is 51.

The spelling of 18130429878 in words is "eighteen billion, one hundred thirty million, four hundred twenty-nine thousand, eight hundred seventy-eight".