1064378879 has 4 divisors (see below), whose sum is σ = 1120398840. Its totient is φ = 1008358920.

The previous prime is 1064378849. The next prime is 1064378923. The reversal of 1064378879 is 9788734601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9788734601 = 877 ⋅11161613.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1064378879 is a prime.

It is a super-2 number, since 2×1064378879² = 2265804796122593282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1064378879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064378839) 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, 28009952 + ... + 28009989.

It is an arithmetic number, because the mean of its divisors is an integer number (280099710).

Almost surely, 2^1064378879 is an apocalyptic number.

1064378879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1064378879 is a deficient number, since it is larger than the sum of its proper divisors (56019961).

1064378879 is an equidigital number, since it uses as much as digits as its factorization.

1064378879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56019960.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 1064378879 is about 32624.8199841777. The cubic root of 1064378879 is about 1021.0149064613.

The spelling of 1064378879 in words is "one billion, sixty-four million, three hundred seventy-eight thousand, eight hundred seventy-nine".