1331607852 has 72 divisors (see below), whose sum is σ = 3510695552. Its totient is φ = 425088000.

The previous prime is 1331607833. The next prime is 1331607853. The reversal of 1331607852 is 2587061331.

1331607852 is a `hidden beast` number, since 13 + 31 + 607 + 8 + 5 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1331607853) 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, 102102 + ... + 114402.

Almost surely, 2^1331607852 is an apocalyptic number.

1331607852 is a gapful number since it is divisible by the number (12) 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 1331607852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1755347776).

1331607852 is an abundant number, since it is smaller than the sum of its proper divisors (2179087700).

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

1331607852 is a wasteful number, since it uses less digits than its factorization.

1331607852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12439 (or 12434 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1331607852 is about 36491.2023918095. The cubic root of 1331607852 is about 1100.1674268569.

The spelling of 1331607852 in words is "one billion, three hundred thirty-one million, six hundred seven thousand, eight hundred fifty-two".