1352987865 has 12 divisors (see below), whose sum is σ = 2345179044. Its totient is φ = 721593504.

The previous prime is 1352987861. The next prime is 1352987939. The reversal of 1352987865 is 5687892531.

It can be written as a sum of positive squares in 2 ways, for example, as 306530064 + 1046457801 = 17508^2 + 32349^2 .

It is not a de Polignac number, because 1352987865 - 2² = 1352987861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1352987861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15033154 + ... + 15033243.

It is an arithmetic number, because the mean of its divisors is an integer number (195431587).

Almost surely, 2^1352987865 is an apocalyptic number.

1352987865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1352987865 is a deficient number, since it is larger than the sum of its proper divisors (992191179).

1352987865 is a wasteful number, since it uses less digits than its factorization.

1352987865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30066408 (or 30066405 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 1352987865 is about 36782.9833618754. The cubic root of 1352987865 is about 1106.0242109332.

The spelling of 1352987865 in words is "one billion, three hundred fifty-two million, nine hundred eighty-seven thousand, eight hundred sixty-five".