1118293940 has 24 divisors (see below), whose sum is σ = 2429398440. Its totient is φ = 431892608.

The previous prime is 1118293931. The next prime is 1118293951. The reversal of 1118293940 is 493928111.

It can be written as a sum of positive squares in 4 ways, for example, as 174821284 + 943472656 = 13222^2 + 30716^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1118293894 and 1118293903.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 963467 + ... + 964626.

It is an arithmetic number, because the mean of its divisors is an integer number (101224935).

Almost surely, 2^1118293940 is an apocalyptic number.

1118293940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1118293940 is an abundant number, since it is smaller than the sum of its proper divisors (1311104500).

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

1118293940 is a wasteful number, since it uses less digits than its factorization.

1118293940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928131 (or 1928129 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1118293940 is about 33440.9022007481. The cubic root of 1118293940 is about 1037.9712484441.

The spelling of 1118293940 in words is "one billion, one hundred eighteen million, two hundred ninety-three thousand, nine hundred forty".