1064769921 has 8 divisors (see below), whose sum is σ = 1577436960. Its totient is φ = 709846596.

The previous prime is 1064769917. The next prime is 1064769931. The reversal of 1064769921 is 1299674601.

It is not a de Polignac number, because 1064769921 - 2² = 1064769917 is a prime.

It is a super-2 number, since 2×1064769921² = 2267469969332692482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1064769931) 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 in 7 ways as a sum of consecutive naturals, for example, 19717935 + ... + 19717988.

It is an arithmetic number, because the mean of its divisors is an integer number (197179620).

Almost surely, 2^1064769921 is an apocalyptic number.

It is an amenable number.

1064769921 is a deficient number, since it is larger than the sum of its proper divisors (512667039).

1064769921 is an equidigital number, since it uses as much as digits as its factorization.

1064769921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39435932 (or 39435926 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1064769921 is about 32630.8124477464. The cubic root of 1064769921 is about 1021.1399279909.

The spelling of 1064769921 in words is "one billion, sixty-four million, seven hundred sixty-nine thousand, nine hundred twenty-one".