1021520963 has 2 divisors, whose sum is σ = 1021520964. Its totient is φ = 1021520962.

The previous prime is 1021520947. The next prime is 1021520987. The reversal of 1021520963 is 3690251201.

1021520963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021520963 - 2⁴ = 1021520947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021520063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510760481 + 510760482.

It is an arithmetic number, because the mean of its divisors is an integer number (510760482).

Almost surely, 2^1021520963 is an apocalyptic number.

1021520963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021520963 is an equidigital number, since it uses as much as digits as its factorization.

1021520963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1021520963 is about 31961.2415747574. The cubic root of 1021520963 is about 1007.1227996025.

The spelling of 1021520963 in words is "one billion, twenty-one million, five hundred twenty thousand, nine hundred sixty-three".