1315842840 has 512 divisors, whose sum is σ = 5171040000. Its totient is φ = 294617088.

The previous prime is 1315842799. The next prime is 1315842859. The reversal of 1315842840 is 482485131.

1315842840 is a `hidden beast` number, since 1 + 31 + 584 + 2 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1315842795 and 1315842804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8831086 + ... + 8831234.

Almost surely, 2^1315842840 is an apocalyptic number.

1315842840 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 1315842840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2585520000).

1315842840 is an abundant number, since it is smaller than the sum of its proper divisors (3855197160).

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

1315842840 is a wasteful number, since it uses less digits than its factorization.

1315842840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 1315842840 is about 36274.5481019406. The cubic root of 1315842840 is about 1095.8085227684.

The spelling of 1315842840 in words is "one billion, three hundred fifteen million, eight hundred forty-two thousand, eight hundred forty".