1052178649 has 2 divisors, whose sum is σ = 1052178650. Its totient is φ = 1052178648.

The previous prime is 1052178623. The next prime is 1052178733. The reversal of 1052178649 is 9468712501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996033600 + 56145049 = 31560^2 + 7493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1052178649 is a prime.

It is a super-2 number, since 2×1052178649² = 2214159818822930402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1052170649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526089324 + 526089325.

It is an arithmetic number, because the mean of its divisors is an integer number (526089325).

Almost surely, 2^1052178649 is an apocalyptic number.

It is an amenable number.

1052178649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1052178649 is an equidigital number, since it uses as much as digits as its factorization.

1052178649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1052178649 is about 32437.3033558587. The cubic root of 1052178649 is about 1017.0988460637.

The spelling of 1052178649 in words is "one billion, fifty-two million, one hundred seventy-eight thousand, six hundred forty-nine".