1285922160 has 240 divisors, whose sum is σ = 4721483520. Its totient is φ = 312238080.

The previous prime is 1285922149. The next prime is 1285922171. The reversal of 1285922160 is 612295821.

1285922160 is a `hidden beast` number, since 1 + 2 + 8 + 592 + 2 + 1 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (1285922149) and next prime (1285922171).

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 377746 + ... + 381134.

It is an arithmetic number, because the mean of its divisors is an integer number (19672848).

Almost surely, 2^1285922160 is an apocalyptic number.

1285922160 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 1285922160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2360741760).

1285922160 is an abundant number, since it is smaller than the sum of its proper divisors (3435561360).

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

1285922160 is a wasteful number, since it uses less digits than its factorization.

1285922160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456 (or 3447 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1285922160 is about 35859.7568313005. The cubic root of 1285922160 is about 1087.4389723978.

The spelling of 1285922160 in words is "one billion, two hundred eighty-five million, nine hundred twenty-two thousand, one hundred sixty".