1052945378 has 4 divisors (see below), whose sum is σ = 1579418070. Its totient is φ = 526472688.

The previous prime is 1052945353. The next prime is 1052945423. The reversal of 1052945378 is 8735492501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 747639649 + 305305729 = 27343^2 + 17473^2 .

It is a super-2 number, since 2×1052945378² = 2217387938103125768, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 263236343 + ... + 263236346.

Almost surely, 2^1052945378 is an apocalyptic number.

1052945378 is a deficient number, since it is larger than the sum of its proper divisors (526472692).

1052945378 is an equidigital number, since it uses as much as digits as its factorization.

1052945378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526472691.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 1052945378 is about 32449.1198339801. The cubic root of 1052945378 is about 1017.3458414556.

The spelling of 1052945378 in words is "one billion, fifty-two million, nine hundred forty-five thousand, three hundred seventy-eight".