1980396241 has 4 divisors (see below), whose sum is σ = 1980854512. Its totient is φ = 1979937972.

The previous prime is 1980396211. The next prime is 1980396263. The reversal of 1980396241 is 1426930891.

It is a happy number.

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: 1426930891 = 113 ⋅12627707.

It is a cyclic number.

It is not a de Polignac number, because 1980396241 - 2¹³ = 1980388049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980396211) 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, 222591 + ... + 231316.

It is an arithmetic number, because the mean of its divisors is an integer number (495213628).

Almost surely, 2^1980396241 is an apocalyptic number.

It is an amenable number.

1980396241 is a deficient number, since it is larger than the sum of its proper divisors (458271).

1980396241 is an equidigital number, since it uses as much as digits as its factorization.

1980396241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458270.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1980396241 is about 44501.6431269678. The cubic root of 1980396241 is about 1255.7909948196.

The spelling of 1980396241 in words is "one billion, nine hundred eighty million, three hundred ninety-six thousand, two hundred forty-one".