1318818940 has 12 divisors (see below), whose sum is σ = 2769519816. Its totient is φ = 527527568.

The previous prime is 1318818931. The next prime is 1318818961. The reversal of 1318818940 is 498188131.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 32970454 + ... + 32970493.

It is an arithmetic number, because the mean of its divisors is an integer number (230793318).

Almost surely, 2^1318818940 is an apocalyptic number.

1318818940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1318818940 is an abundant number, since it is smaller than the sum of its proper divisors (1450700876).

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

1318818940 is a wasteful number, since it uses less digits than its factorization.

1318818940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65940956 (or 65940954 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 1318818940 is about 36315.5468084951. The cubic root of 1318818940 is about 1096.6340469208.

The spelling of 1318818940 in words is "one billion, three hundred eighteen million, eight hundred eighteen thousand, nine hundred forty".