1285711794 has 48 divisors (see below), whose sum is σ = 2886833664. Its totient is φ = 413121600.

The previous prime is 1285711793. The next prime is 1285711813. The reversal of 1285711794 is 4971175821.

It is a happy number.

1285711794 is a `hidden beast` number, since 1 + 2 + 8 + 571 + 1 + 79 + 4 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1285711793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142374 + ... + 151134.

It is an arithmetic number, because the mean of its divisors is an integer number (60142368).

Almost surely, 2^1285711794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285711794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443416832).

1285711794 is an abundant number, since it is smaller than the sum of its proper divisors (1601121870).

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

1285711794 is a wasteful number, since it uses less digits than its factorization.

1285711794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9063 (or 9060 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 1285711794 is about 35856.8235347193. The cubic root of 1285711794 is about 1087.3796705547.

The spelling of 1285711794 in words is "one billion, two hundred eighty-five million, seven hundred eleven thousand, seven hundred ninety-four".