1964493 has 20 divisors (see below), whose sum is σ = 2981440. Its totient is φ = 1288872.

The previous prime is 1964483. The next prime is 1964531. The reversal of 1964493 is 3944691.

1964493 is a `hidden beast` number, since 1 + 9 + 644 + 9 + 3 = 666.

It is not a de Polignac number, because 1964493 - 2⁴ = 1964477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964483) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6246 + ... + 6552.

It is an arithmetic number, because the mean of its divisors is an integer number (149072).

2^1964493 is an apocalyptic number.

It is an amenable number.

1964493 is a deficient number, since it is larger than the sum of its proper divisors (1016947).

1964493 is an equidigital number, since it uses as much as digits as its factorization.

1964493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 389 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 1964493 is about 1401.6037243101. The cubic root of 1964493 is about 125.2420483316.

The spelling of 1964493 in words is "one million, nine hundred sixty-four thousand, four hundred ninety-three".