1964731945 has 8 divisors (see below), whose sum is σ = 2572012800. Its totient is φ = 1428895920.

The previous prime is 1964731913. The next prime is 1964731957. The reversal of 1964731945 is 5491374691.

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

It is not a de Polignac number, because 1964731945 - 2⁵ = 1964731913 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17861145 + ... + 17861254.

It is an arithmetic number, because the mean of its divisors is an integer number (321501600).

Almost surely, 2^1964731945 is an apocalyptic number.

It is an amenable number.

1964731945 is a deficient number, since it is larger than the sum of its proper divisors (607280855).

1964731945 is a wasteful number, since it uses less digits than its factorization.

1964731945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35722415.

The product of its digits is 816480, while the sum is 49.

The square root of 1964731945 is about 44325.2968969188. The cubic root of 1964731945 is about 1252.4712593488.

The spelling of 1964731945 in words is "one billion, nine hundred sixty-four million, seven hundred thirty-one thousand, nine hundred forty-five".