1052861278 has 48 divisors (see below), whose sum is σ = 1872707040. Its totient is φ = 434827008.

The previous prime is 1052861239. The next prime is 1052861387. The reversal of 1052861278 is 8721682501.

It is a super-2 number, since 2×1052861278² = 2217033741423586568, 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 1052861278.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2303626 + ... + 2304082.

It is an arithmetic number, because the mean of its divisors is an integer number (39014730).

Almost surely, 2^1052861278 is an apocalyptic number.

1052861278 is a deficient number, since it is larger than the sum of its proper divisors (819845762).

1052861278 is an equidigital number, since it uses as much as digits as its factorization.

1052861278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 1052861278 is about 32447.8239332008. The cubic root of 1052861278 is about 1017.3187551935.

The spelling of 1052861278 in words is "one billion, fifty-two million, eight hundred sixty-one thousand, two hundred seventy-eight".