1018440468 has 36 divisors (see below), whose sum is σ = 2612821120. Its totient is φ = 334412496.

The previous prime is 1018440457. The next prime is 1018440491. The reversal of 1018440468 is 8640448101.

1018440468 is a `hidden beast` number, since 10 + 184 + 4 + 0 + 468 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208708 + ... + 213531.

Almost surely, 2^1018440468 is an apocalyptic number.

1018440468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1018440468 is an abundant number, since it is smaller than the sum of its proper divisors (1594380652).

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

1018440468 is a wasteful number, since it uses less digits than its factorization.

1018440468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422316 (or 422311 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 1018440468 is about 31913.0140851659. The cubic root of 1018440468 is about 1006.1094216226.

Adding to 1018440468 its reverse (8640448101), we get a palindrome (9658888569).

The spelling of 1018440468 in words is "one billion, eighteen million, four hundred forty thousand, four hundred sixty-eight".