1318872080 has 40 divisors (see below), whose sum is σ = 3227769600. Its totient is φ = 499782528.

The previous prime is 1318872077. The next prime is 1318872103. The reversal of 1318872080 is 802788131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432320 + ... + 435359.

It is an arithmetic number, because the mean of its divisors is an integer number (80694240).

Almost surely, 2^1318872080 is an apocalyptic number.

1318872080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1318872080 is an abundant number, since it is smaller than the sum of its proper divisors (1908897520).

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

1318872080 is a wasteful number, since it uses less digits than its factorization.

1318872080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867711 (or 867705 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 1318872080 is about 36316.2784436952. The cubic root of 1318872080 is about 1096.6487758445.

The spelling of 1318872080 in words is "one billion, three hundred eighteen million, eight hundred seventy-two thousand, eighty".