1336135680 has 312 divisors, whose sum is σ = 5060072160. Its totient is φ = 323420160.

The previous prime is 1336135667. The next prime is 1336135709. The reversal of 1336135680 is 865316331.

It is a happy number.

1336135680 is a `hidden beast` number, since 1 + 33 + 61 + 3 + 568 + 0 = 666.

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 23 ways as a sum of consecutive naturals, for example, 2027191 + ... + 2027849.

It is an arithmetic number, because the mean of its divisors is an integer number (16218180).

Almost surely, 2^1336135680 is an apocalyptic number.

1336135680 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 1336135680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2530036080).

1336135680 is an abundant number, since it is smaller than the sum of its proper divisors (3723936480).

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

1336135680 is a wasteful number, since it uses less digits than its factorization.

1336135680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1336135680 is about 36553.1897376959. The cubic root of 1336135680 is about 1101.4129721106.

The spelling of 1336135680 in words is "one billion, three hundred thirty-six million, one hundred thirty-five thousand, six hundred eighty".