1980988 has 12 divisors (see below), whose sum is σ = 3477600. Its totient is φ = 987392.

The previous prime is 1980983. The next prime is 1980991. The reversal of 1980988 is 8890891.

1980988 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1980988² = 7848626912288, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245 + ... + 2347.

It is an arithmetic number, because the mean of its divisors is an integer number (289800).

2^1980988 is an apocalyptic number.

It is an amenable number.

1980988 is a deficient number, since it is larger than the sum of its proper divisors (1496612).

1980988 is a wasteful number, since it uses less digits than its factorization.

1980988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1980988 is about 1407.4757546757. The cubic root of 1980988 is about 125.5916062656.

Subtracting 1980988 from its reverse (8890891), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1980988 in words is "one million, nine hundred eighty thousand, nine hundred eighty-eight".