1946538 has 64 divisors (see below), whose sum is σ = 4924800. Its totient is φ = 564480.

The previous prime is 1946537. The next prime is 1946543. The reversal of 1946538 is 8356491.

It is not an unprimeable number, because it can be changed into a prime (1946537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17170 + ... + 17282.

It is an arithmetic number, because the mean of its divisors is an integer number (76950).

2^1946538 is an apocalyptic number.

1946538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1946538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2462400).

1946538 is an abundant number, since it is smaller than the sum of its proper divisors (2978262).

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

1946538 is a wasteful number, since it uses less digits than its factorization.

1946538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 158 counting only the distinct ones).

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

The square root of 1946538 is about 1395.1838588516. The cubic root of 1946538 is about 124.8593190637.

It can be divided in two parts, 19465 and 38, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 1946538 in words is "one million, nine hundred forty-six thousand, five hundred thirty-eight".