1818429144 has 64 divisors (see below), whose sum is σ = 5199075840. Its totient is φ = 519194880.

The previous prime is 1818429139. The next prime is 1818429229. The reversal of 1818429144 is 4419248181.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1818429096 and 1818429105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332109 + ... + 337539.

It is an arithmetic number, because the mean of its divisors is an integer number (81235560).

Almost surely, 2^1818429144 is an apocalyptic number.

1818429144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1818429144 is an abundant number, since it is smaller than the sum of its proper divisors (3380646696).

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

1818429144 is a wasteful number, since it uses less digits than its factorization.

1818429144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7440 (or 7436 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 1818429144 is about 42643.0433247910. The cubic root of 1818429144 is about 1220.5777841917.

The spelling of 1818429144 in words is "one billion, eight hundred eighteen million, four hundred twenty-nine thousand, one hundred forty-four".