1118149872 has 80 divisors (see below), whose sum is σ = 3333358080. Its totient is φ = 316359936.

The previous prime is 1118149871. The next prime is 1118149873. The reversal of 1118149872 is 2789418111.

It is an interprime number because it is at equal distance from previous prime (1118149871) and next prime (1118149873).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118149871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18454 + ... + 50762.

It is an arithmetic number, because the mean of its divisors is an integer number (41666976).

Almost surely, 2^1118149872 is an apocalyptic number.

1118149872 is a gapful number since it is divisible by the number (12) 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 1118149872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666679040).

1118149872 is an abundant number, since it is smaller than the sum of its proper divisors (2215208208).

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

1118149872 is a wasteful number, since it uses less digits than its factorization.

1118149872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32430 (or 32424 counting only the distinct ones).

The product of its digits is 32256, while the sum is 42.

The square root of 1118149872 is about 33438.7480626892. The cubic root of 1118149872 is about 1037.9266731440.

The spelling of 1118149872 in words is "one billion, one hundred eighteen million, one hundred forty-nine thousand, eight hundred seventy-two".