1964138 has 16 divisors (see below), whose sum is σ = 3260736. Its totient is φ = 879840.

The previous prime is 1964119. The next prime is 1964143. The reversal of 1964138 is 8314691.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 995 + ... + 2217.

It is an arithmetic number, because the mean of its divisors is an integer number (203796).

2^1964138 is an apocalyptic number.

1964138 is a deficient number, since it is larger than the sum of its proper divisors (1296598).

1964138 is a wasteful number, since it uses less digits than its factorization.

1964138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309.

The product of its digits is 5184, while the sum is 32.

The square root of 1964138 is about 1401.4770779431. The cubic root of 1964138 is about 125.2345037887.

It can be divided in two parts, 196 and 4138, that added together give a palindrome (4334).

The spelling of 1964138 in words is "one million, nine hundred sixty-four thousand, one hundred thirty-eight".