1331711845 has 8 divisors (see below), whose sum is σ = 1667534976. Its totient is φ = 1019048976.

The previous prime is 1331711827. The next prime is 1331711861. The reversal of 1331711845 is 5481171331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331711845 is a prime.

It is a super-2 number, since 2×1331711845² = 3546912876226608050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331711845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5789937 + ... + 5790166.

It is an arithmetic number, because the mean of its divisors is an integer number (208441872).

Almost surely, 2^1331711845 is an apocalyptic number.

It is an amenable number.

1331711845 is a deficient number, since it is larger than the sum of its proper divisors (335823131).

1331711845 is a wasteful number, since it uses less digits than its factorization.

1331711845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11580131.

The product of its digits is 10080, while the sum is 34.

The square root of 1331711845 is about 36492.6272690800. The cubic root of 1331711845 is about 1100.1960656019.

The spelling of 1331711845 in words is "one billion, three hundred thirty-one million, seven hundred eleven thousand, eight hundred forty-five".