1064378849 has 2 divisors, whose sum is σ = 1064378850. Its totient is φ = 1064378848.

The previous prime is 1064378839. The next prime is 1064378923. The reversal of 1064378849 is 9488734601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731973025 + 332405824 = 27055^2 + 18232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1064378849 is a prime.

It is a super-2 number, since 2×1064378849² = 2265804668397129602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1064378797 and 1064378806.

It is not a weakly prime, because it can be changed into another prime (1064378839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532189424 + 532189425.

It is an arithmetic number, because the mean of its divisors is an integer number (532189425).

Almost surely, 2^1064378849 is an apocalyptic number.

It is an amenable number.

1064378849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1064378849 is an equidigital number, since it uses as much as digits as its factorization.

1064378849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 1064378849 is about 32624.8195244050. The cubic root of 1064378849 is about 1021.0148968687.

The spelling of 1064378849 in words is "one billion, sixty-four million, three hundred seventy-eight thousand, eight hundred forty-nine".