1065213865 has 8 divisors (see below), whose sum is σ = 1278433728. Its totient is φ = 852053040.

The previous prime is 1065213833. The next prime is 1065213887. The reversal of 1065213865 is 5683125601.

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

It is not a de Polignac number, because 1065213865 - 2⁵ = 1065213833 is a prime.

It is a super-2 number, since 2×1065213865² = 2269361156376476450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54450 + ... + 71380.

It is an arithmetic number, because the mean of its divisors is an integer number (159804216).

Almost surely, 2^1065213865 is an apocalyptic number.

It is an amenable number.

1065213865 is a deficient number, since it is larger than the sum of its proper divisors (213219863).

1065213865 is a wasteful number, since it uses less digits than its factorization.

1065213865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29519.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1065213865 is about 32637.6142663645. The cubic root of 1065213865 is about 1021.2818259247.

The spelling of 1065213865 in words is "one billion, sixty-five million, two hundred thirteen thousand, eight hundred sixty-five".