1964773645 has 8 divisors (see below), whose sum is σ = 2433784320. Its totient is φ = 1521114960.

The previous prime is 1964773633. The next prime is 1964773651. The reversal of 1964773645 is 5463774691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1964773645 - 2⁹ = 1964773133 is a prime.

It is a super-3 number, since 3×1964773645³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1964773592 and 1964773601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6337825 + ... + 6338134.

It is an arithmetic number, because the mean of its divisors is an integer number (304223040).

Almost surely, 2^1964773645 is an apocalyptic number.

It is an amenable number.

1964773645 is a deficient number, since it is larger than the sum of its proper divisors (469010675).

1964773645 is a wasteful number, since it uses less digits than its factorization.

1964773645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12675995.

The product of its digits is 3810240, while the sum is 52.

The square root of 1964773645 is about 44325.7672804431. The cubic root of 1964773645 is about 1252.4801202152.

The spelling of 1964773645 in words is "one billion, nine hundred sixty-four million, seven hundred seventy-three thousand, six hundred forty-five".