1964905 has 4 divisors (see below), whose sum is σ = 2357892. Its totient is φ = 1571920.

The previous prime is 1964899. The next prime is 1964917. The reversal of 1964905 is 5094691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 346921 + 1617984 = 589^2 + 1272^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1964905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196486 + ... + 196495.

It is an arithmetic number, because the mean of its divisors is an integer number (589473).

2^1964905 is an apocalyptic number.

It is an amenable number.

1964905 is a deficient number, since it is larger than the sum of its proper divisors (392987).

1964905 is an equidigital number, since it uses as much as digits as its factorization.

1964905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392986.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1964905 is about 1401.7506911002. The cubic root of 1964905 is about 125.2508031125.

The spelling of 1964905 in words is "one million, nine hundred sixty-four thousand, nine hundred five".