1285158000 has 320 divisors, whose sum is σ = 4869116928. Its totient is φ = 285465600.

The previous prime is 1285157987. The next prime is 1285158011. The reversal of 1285158000 is 8515821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1553587 + ... + 1554413.

Almost surely, 2^1285158000 is an apocalyptic number.

1285158000 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 1285158000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2434558464).

1285158000 is an abundant number, since it is smaller than the sum of its proper divisors (3583958928).

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

1285158000 is a wasteful number, since it uses less digits than its factorization.

1285158000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 1285158000 is about 35849.1004071232. The cubic root of 1285158000 is about 1087.2235259661.

The spelling of 1285158000 in words is "one billion, two hundred eighty-five million, one hundred fifty-eight thousand".