1064397813 has 4 divisors (see below), whose sum is σ = 1419197088. Its totient is φ = 709598540.

The previous prime is 1064397787. The next prime is 1064397821. The reversal of 1064397813 is 3187934601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1064397813 - 2¹⁰ = 1064396789 is a prime.

It is a super-2 number, since 2×1064397813² = 2265885408638365938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064397853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177399633 + ... + 177399638.

It is an arithmetic number, because the mean of its divisors is an integer number (354799272).

Almost surely, 2^1064397813 is an apocalyptic number.

It is an amenable number.

1064397813 is a deficient number, since it is larger than the sum of its proper divisors (354799275).

1064397813 is an equidigital number, since it uses as much as digits as its factorization.

1064397813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354799274.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1064397813 is about 32625.1101607336. The cubic root of 1064397813 is about 1021.0209606281.

The spelling of 1064397813 in words is "one billion, sixty-four million, three hundred ninety-seven thousand, eight hundred thirteen".