1315640088 has 192 divisors, whose sum is σ = 4169318400. Its totient is φ = 367061760.

The previous prime is 1315640087. The next prime is 1315640107. The reversal of 1315640088 is 8800465131.

1315640088 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 640 + 0 + 8 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315640087) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6888073 + ... + 6888263.

It is an arithmetic number, because the mean of its divisors is an integer number (21715200).

Almost surely, 2^1315640088 is an apocalyptic number.

1315640088 is a gapful number since it is divisible by the number (18) 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 1315640088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2084659200).

1315640088 is an abundant number, since it is smaller than the sum of its proper divisors (2853678312).

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

1315640088 is a wasteful number, since it uses less digits than its factorization.

1315640088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1315640088 is about 36271.7533074981. The cubic root of 1315640088 is about 1095.7522372265.

The spelling of 1315640088 in words is "one billion, three hundred fifteen million, six hundred forty thousand, eighty-eight".