1331474587 has 2 divisors, whose sum is σ = 1331474588. Its totient is φ = 1331474586.

The previous prime is 1331474569. The next prime is 1331474591. The reversal of 1331474587 is 7854741331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331474587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331474597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665737293 + 665737294.

It is an arithmetic number, because the mean of its divisors is an integer number (665737294).

Almost surely, 2^1331474587 is an apocalyptic number.

1331474587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331474587 is an equidigital number, since it uses as much as digits as its factorization.

1331474587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 43.

The square root of 1331474587 is about 36489.3763580580. The cubic root of 1331474587 is about 1100.1307246844.

The spelling of 1331474587 in words is "one billion, three hundred thirty-one million, four hundred seventy-four thousand, five hundred eighty-seven".