1021563364 has 12 divisors (see below), whose sum is σ = 1787974524. Its totient is φ = 510713504.

The previous prime is 1021563349. The next prime is 1021563383. The reversal of 1021563364 is 4633651201.

It can be written as a sum of positive squares in 2 ways, for example, as 322489764 + 699073600 = 17958^2 + 26440^2 .

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 3 ways as a sum of consecutive naturals, for example, 32982 + ... + 55954.

It is an arithmetic number, because the mean of its divisors is an integer number (148997877).

Almost surely, 2^1021563364 is an apocalyptic number.

It is an amenable number.

1021563364 is a deficient number, since it is larger than the sum of its proper divisors (766411160).

1021563364 is a wasteful number, since it uses less digits than its factorization.

1021563364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34094 (or 34092 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1021563364 is about 31961.9048869119. The cubic root of 1021563364 is about 1007.1367338647.

The spelling of 1021563364 in words is "one billion, twenty-one million, five hundred sixty-three thousand, three hundred sixty-four".