18451025142 has 32 divisors (see below), whose sum is σ = 40916738304. Its totient is φ = 5499559200.

The previous prime is 18451025119. The next prime is 18451025143. The reversal of 18451025142 is 24152015481.

It is a super-2 number, since 2×18451025142² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18451025143) 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, 2287458 + ... + 2295509.

It is an arithmetic number, because the mean of its divisors is an integer number (1278648072).

Almost surely, 2^18451025142 is an apocalyptic number.

18451025142 is an abundant number, since it is smaller than the sum of its proper divisors (22465713162).

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

18451025142 is a wasteful number, since it uses less digits than its factorization.

18451025142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583044.

The product of its (nonzero) digits is 12800, while the sum is 33.

The spelling of 18451025142 in words is "eighteen billion, four hundred fifty-one million, twenty-five thousand, one hundred forty-two".