1315454985 has 224 divisors, whose sum is σ = 2855720448. Its totient is φ = 574801920.

The previous prime is 1315454891. The next prime is 1315454999. The reversal of 1315454985 is 5894545131.

It is a happy number.

1315454985 is a `hidden beast` number, since 1 + 3 + 154 + 5 + 498 + 5 = 666.

It is not a de Polignac number, because 1315454985 - 2¹² = 1315450889 is a prime.

It is a super-2 number, since 2×1315454985² = 3460843635122700450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1315454985.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 18527500 + ... + 18527570.

It is an arithmetic number, because the mean of its divisors is an integer number (12748752).

Almost surely, 2^1315454985 is an apocalyptic number.

1315454985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315454985 is an abundant number, since it is smaller than the sum of its proper divisors (1540265463).

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

1315454985 is a wasteful number, since it uses less digits than its factorization.

1315454985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 132 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 1315454985 is about 36269.2016041159. The cubic root of 1315454985 is about 1095.7008461353.

The spelling of 1315454985 in words is "one billion, three hundred fifteen million, four hundred fifty-four thousand, nine hundred eighty-five".