1964485897 has 8 divisors (see below), whose sum is σ = 2216975040. Its totient is φ = 1724313360.

The previous prime is 1964485891. The next prime is 1964485909. The reversal of 1964485897 is 7985844691.

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

It is a de Polignac number, because none of the positive numbers 2^k-1964485897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1964485891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3078813 + ... + 3079450.

It is an arithmetic number, because the mean of its divisors is an integer number (277121880).

Almost surely, 2^1964485897 is an apocalyptic number.

It is an amenable number.

1964485897 is a deficient number, since it is larger than the sum of its proper divisors (252489143).

1964485897 is a wasteful number, since it uses less digits than its factorization.

1964485897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158303.

The product of its digits is 17418240, while the sum is 61.

The square root of 1964485897 is about 44322.5213294551. The cubic root of 1964485897 is about 1252.4189738594.

The spelling of 1964485897 in words is "one billion, nine hundred sixty-four million, four hundred eighty-five thousand, eight hundred ninety-seven".