1964889145 has 8 divisors (see below), whose sum is σ = 2391076800. Its totient is φ = 1549771440.

The previous prime is 1964889139. The next prime is 1964889163. The reversal of 1964889145 is 5419884691.

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

It is not a de Polignac number, because 1964889145 - 2¹⁷ = 1964758073 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, 2767095 + ... + 2767804.

It is an arithmetic number, because the mean of its divisors is an integer number (298884600).

Almost surely, 2^1964889145 is an apocalyptic number.

It is an amenable number.

1964889145 is a deficient number, since it is larger than the sum of its proper divisors (426187655).

1964889145 is an equidigital number, since it uses as much as digits as its factorization.

1964889145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534975.

The product of its digits is 2488320, while the sum is 55.

The square root of 1964889145 is about 44327.0701152242. The cubic root of 1964889145 is about 1252.5046622483.

The spelling of 1964889145 in words is "one billion, nine hundred sixty-four million, eight hundred eighty-nine thousand, one hundred forty-five".