1331013545 has 8 divisors (see below), whose sum is σ = 1636173000. Its totient is φ = 1038839680.

The previous prime is 1331013527. The next prime is 1331013583. The reversal of 1331013545 is 5453101331.

It can be written as a sum of positive squares in 4 ways, for example, as 110838784 + 1220174761 = 10528^2 + 34931^2 .

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

It is not a de Polignac number, because 1331013545 - 2¹⁶ = 1330948009 is a prime.

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, 3246170 + ... + 3246579.

It is an arithmetic number, because the mean of its divisors is an integer number (204521625).

Almost surely, 2^1331013545 is an apocalyptic number.

It is an amenable number.

1331013545 is a deficient number, since it is larger than the sum of its proper divisors (305159455).

1331013545 is an equidigital number, since it uses as much as digits as its factorization.

1331013545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492795.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1331013545 is about 36483.0583284900. The cubic root of 1331013545 is about 1100.0037313923.

Adding to 1331013545 its reverse (5453101331), we get a palindrome (6784114876).

The spelling of 1331013545 in words is "one billion, three hundred thirty-one million, thirteen thousand, five hundred forty-five".