1021964413 has 4 divisors (see below), whose sum is σ = 1022034240. Its totient is φ = 1021894588.

The previous prime is 1021964393. The next prime is 1021964417. The reversal of 1021964413 is 3144691201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1021964413 - 2²⁹ = 485093501 is a prime.

It is a super-2 number, since 2×1021964413² = 2088822522876869138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021964417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3595 + ... + 45352.

It is an arithmetic number, because the mean of its divisors is an integer number (255508560).

Almost surely, 2^1021964413 is an apocalyptic number.

It is an amenable number.

1021964413 is a deficient number, since it is larger than the sum of its proper divisors (69827).

1021964413 is an equidigital number, since it uses as much as digits as its factorization.

1021964413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69826.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1021964413 is about 31968.1781307600. The cubic root of 1021964413 is about 1007.2685117356.

The spelling of 1021964413 in words is "one billion, twenty-one million, nine hundred sixty-four thousand, four hundred thirteen".