1964538 has 12 divisors (see below), whose sum is σ = 4256538. Its totient is φ = 654840.

The previous prime is 1964531. The next prime is 1964549. The reversal of 1964538 is 8354691.

1964538 is a `hidden beast` number, since 1 + 9 + 645 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1159929 + 804609 = 1077^2 + 897^2 .

It is a d-powerful number, because it can be written as 1 + 9⁴ + 6³ + 4⁶ + 5⁹ + 3³ + 8³ .

It is not an unprimeable number, because it can be changed into a prime (1964531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54553 + ... + 54588.

2^1964538 is an apocalyptic number.

1964538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1964538 is an abundant number, since it is smaller than the sum of its proper divisors (2292000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1964538 is a wasteful number, since it uses less digits than its factorization.

1964538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109149 (or 109146 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1964538 is about 1401.6197772577. The cubic root of 1964538 is about 125.2430046173.

It can be divided in two parts, 19645 and 38, that added together give a 9-th power (19683 = 3⁹).

The spelling of 1964538 in words is "one million, nine hundred sixty-four thousand, five hundred thirty-eight".