1964988 has 18 divisors (see below), whose sum is σ = 4967144. Its totient is φ = 654984.

The previous prime is 1964987. The next prime is 1965077. The reversal of 1964988 is 8894691.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1964988² = 7722355680288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964981) 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, 27256 + ... + 27327.

2^1964988 is an apocalyptic number.

1964988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1964988 is an abundant number, since it is smaller than the sum of its proper divisors (3002156).

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

1964988 is a wasteful number, since it uses less digits than its factorization.

1964988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54593 (or 54588 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1964988 is about 1401.7802966228. The cubic root of 1964988 is about 125.2525666702.

It can be divided in two parts, 196 and 4988, that added together give a square (5184 = 72²).

The spelling of 1964988 in words is "one million, nine hundred sixty-four thousand, nine hundred eighty-eight".