1964618353 has 4 divisors (see below), whose sum is σ = 1965071988. Its totient is φ = 1964164720.

The previous prime is 1964618321. The next prime is 1964618387. The reversal of 1964618353 is 3538164691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3538164691 = 29 ⋅122005679.

It can be written as a sum of positive squares in 2 ways, for example, as 1689456609 + 275161744 = 41103^2 + 16588^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964618353 - 2⁵ = 1964618321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1964618303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220258 + ... + 229003.

It is an arithmetic number, because the mean of its divisors is an integer number (491267997).

Almost surely, 2^1964618353 is an apocalyptic number.

It is an amenable number.

1964618353 is a deficient number, since it is larger than the sum of its proper divisors (453635).

1964618353 is an equidigital number, since it uses as much as digits as its factorization.

1964618353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453634.

The product of its digits is 466560, while the sum is 46.

The square root of 1964618353 is about 44324.0155333426. The cubic root of 1964618353 is about 1252.4471214577.

The spelling of 1964618353 in words is "one billion, nine hundred sixty-four million, six hundred eighteen thousand, three hundred fifty-three".