1980937 has 4 divisors (see below), whose sum is σ = 2263936. Its totient is φ = 1697940.

The previous prime is 1980929. The next prime is 1980941. The reversal of 1980937 is 7390891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7390891 = 47 ⋅157253.

It is a cyclic number.

It is not a de Polignac number, because 1980937 - 2³ = 1980929 is a prime.

It is a super-2 number, since 2×1980937² = 7848222795938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1980896 and 1980905.

It is not an unprimeable number, because it can be changed into a prime (1980907) 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, 141489 + ... + 141502.

It is an arithmetic number, because the mean of its divisors is an integer number (565984).

2^1980937 is an apocalyptic number.

It is an amenable number.

1980937 is a deficient number, since it is larger than the sum of its proper divisors (282999).

1980937 is an equidigital number, since it uses as much as digits as its factorization.

1980937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282998.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1980937 is about 1407.4576370179. The cubic root of 1980937 is about 125.5905284824.

The spelling of 1980937 in words is "one million, nine hundred eighty thousand, nine hundred thirty-seven".