1315845040 has 20 divisors (see below), whose sum is σ = 3059339904. Its totient is φ = 526337984.

The previous prime is 1315845001. The next prime is 1315845053. The reversal of 1315845040 is 405485131.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1315844993 and 1315845011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8223952 + ... + 8224111.

Almost surely, 2^1315845040 is an apocalyptic number.

1315845040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315845040 is an abundant number, since it is smaller than the sum of its proper divisors (1743494864).

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

1315845040 is a wasteful number, since it uses less digits than its factorization.

1315845040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16448076 (or 16448070 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1315845040 is about 36274.5784262202. The cubic root of 1315845040 is about 1095.8091334739.

The spelling of 1315845040 in words is "one billion, three hundred fifteen million, eight hundred forty-five thousand, forty".