1064221915 has 8 divisors (see below), whose sum is σ = 1278247680. Its totient is φ = 850589952.

The previous prime is 1064221897. The next prime is 1064221919. The reversal of 1064221915 is 5191224601.

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

It is a cyclic number.

It is not a de Polignac number, because 1064221915 - 2²⁹ = 527351003 is a prime.

It is a super-2 number, since 2×1064221915² = 2265136568732534450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1064221919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92470 + ... + 103339.

It is an arithmetic number, because the mean of its divisors is an integer number (159780960).

Almost surely, 2^1064221915 is an apocalyptic number.

1064221915 is a deficient number, since it is larger than the sum of its proper divisors (214025765).

1064221915 is a wasteful number, since it uses less digits than its factorization.

1064221915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196901.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1064221915 is about 32622.4143036655. The cubic root of 1064221915 is about 1020.9647142896.

The spelling of 1064221915 in words is "one billion, sixty-four million, two hundred twenty-one thousand, nine hundred fifteen".