1964223461 has 2 divisors, whose sum is σ = 1964223462. Its totient is φ = 1964223460.

The previous prime is 1964223451. The next prime is 1964223463. The reversal of 1964223461 is 1643224691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1961958436 + 2265025 = 44294^2 + 1505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964223461 - 2³⁰ = 890481637 is a prime.

Together with 1964223463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1964223463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982111730 + 982111731.

It is an arithmetic number, because the mean of its divisors is an integer number (982111731).

Almost surely, 2^1964223461 is an apocalyptic number.

It is an amenable number.

1964223461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964223461 is an equidigital number, since it uses as much as digits as its factorization.

1964223461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 1964223461 is about 44319.5607040503. The cubic root of 1964223461 is about 1252.3632010890.

The spelling of 1964223461 in words is "one billion, nine hundred sixty-four million, two hundred twenty-three thousand, four hundred sixty-one".