1964895 has 16 divisors (see below), whose sum is σ = 3252960. Its totient is φ = 1011584.

The previous prime is 1964887. The next prime is 1964899. The reversal of 1964895 is 5984691.

It is a cyclic number.

It is not a de Polignac number, because 1964895 - 2³ = 1964887 is a prime.

It is a super-2 number, since 2×1964895² = 7721624722050, which contains 22 as substring.

1964895 is a lucky number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964899) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1824 + ... + 2693.

It is an arithmetic number, because the mean of its divisors is an integer number (203310).

2^1964895 is an apocalyptic number.

1964895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1964895 is a deficient number, since it is larger than the sum of its proper divisors (1288065).

1964895 is a wasteful number, since it uses less digits than its factorization.

1964895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4554.

The product of its digits is 77760, while the sum is 42.

The square root of 1964895 is about 1401.7471241276. The cubic root of 1964895 is about 125.2505906323.

The spelling of 1964895 in words is "one million, nine hundred sixty-four thousand, eight hundred ninety-five".