1118301840 has 120 divisors (see below), whose sum is σ = 3762021120. Its totient is φ = 297706752.

The previous prime is 1118301809. The next prime is 1118301841. The reversal of 1118301840 is 481038111.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118301841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 634881 + ... + 636639.

It is an arithmetic number, because the mean of its divisors is an integer number (31350176).

Almost surely, 2^1118301840 is an apocalyptic number.

1118301840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118301840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1881010560).

1118301840 is an abundant number, since it is smaller than the sum of its proper divisors (2643719280).

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

1118301840 is a wasteful number, since it uses less digits than its factorization.

1118301840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661 (or 2652 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 1118301840 is about 33441.0203193623. The cubic root of 1118301840 is about 1037.9736926296.

Adding to 1118301840 its reverse (481038111), we get a palindrome (1599339951).

It can be divided in two parts, 1118301 and 840, that multiplied together give a triangular number (939372840 = T₄₃₃₄₄).

The spelling of 1118301840 in words is "one billion, one hundred eighteen million, three hundred one thousand, eight hundred forty".