1284986160 has 160 divisors (see below), whose sum is σ = 4472422080. Its totient is φ = 339075072.

The previous prime is 1284986147. The next prime is 1284986161. The reversal of 1284986160 is 616894821.

1284986160 is a `hidden beast` number, since 1 + 28 + 4 + 9 + 8 + 616 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1284986161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206454 + ... + 212586.

It is an arithmetic number, because the mean of its divisors is an integer number (27952638).

Almost surely, 2^1284986160 is an apocalyptic number.

1284986160 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 1284986160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2236211040).

1284986160 is an abundant number, since it is smaller than the sum of its proper divisors (3187435920).

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

1284986160 is a wasteful number, since it uses less digits than its factorization.

1284986160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252 (or 6240 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1284986160 is about 35846.7036141400. The cubic root of 1284986160 is about 1087.1750658239.

The spelling of 1284986160 in words is "one billion, two hundred eighty-four million, nine hundred eighty-six thousand, one hundred sixty".