1318764020 has 96 divisors (see below), whose sum is σ = 3243276288. Its totient is φ = 441073152.

The previous prime is 1318764017. The next prime is 1318764049. The reversal of 1318764020 is 204678131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1654262 + ... + 1655058.

It is an arithmetic number, because the mean of its divisors is an integer number (33784128).

Almost surely, 2^1318764020 is an apocalyptic number.

1318764020 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 1318764020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621638144).

1318764020 is an abundant number, since it is smaller than the sum of its proper divisors (1924512268).

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

1318764020 is a wasteful number, since it uses less digits than its factorization.

1318764020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1318764020 is about 36314.7906506426. The cubic root of 1318764020 is about 1096.6188242151.

The spelling of 1318764020 in words is "one billion, three hundred eighteen million, seven hundred sixty-four thousand, twenty".