1964947653 has 10 divisors (see below), whose sum is σ = 2935292294. Its totient is φ = 1309965048.

The previous prime is 1964947637. The next prime is 1964947717. The reversal of 1964947653 is 3567494691.

1964947653 is a `hidden beast` number, since 1 + 96 + 494 + 7 + 65 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1451381409 + 513566244 = 38097^2 + 22662^2 .

It is not a de Polignac number, because 1964947653 - 2⁴ = 1964947637 is a prime.

It is a super-2 number, since 2×1964947653² = 7722038558060416818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1964947653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964947253) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 12129226 + ... + 12129387.

Almost surely, 2^1964947653 is an apocalyptic number.

It is an amenable number.

1964947653 is a deficient number, since it is larger than the sum of its proper divisors (970344641).

1964947653 is an equidigital number, since it uses as much as digits as its factorization.

1964947653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24258625 (or 24258616 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 1964947653 is about 44327.7300682090. The cubic root of 1964947653 is about 1252.5170939615.

The spelling of 1964947653 in words is "one billion, nine hundred sixty-four million, nine hundred forty-seven thousand, six hundred fifty-three".