1980610001 has 4 divisors (see below), whose sum is σ = 2028917604. Its totient is φ = 1932302400.

The previous prime is 1980609991. The next prime is 1980610081. The reversal of 1980610001 is 1000160891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 321269776 + 1659340225 = 17924^2 + 40735^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980610001 - 2⁶ = 1980609937 is a prime.

It is a super-2 number, since 2×1980610001² = 7845631952122440002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980610081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24153740 + ... + 24153821.

It is an arithmetic number, because the mean of its divisors is an integer number (507229401).

Almost surely, 2^1980610001 is an apocalyptic number.

It is an amenable number.

1980610001 is a deficient number, since it is larger than the sum of its proper divisors (48307603).

1980610001 is an equidigital number, since it uses as much as digits as its factorization.

1980610001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48307602.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1980610001 is about 44504.0447712340. The cubic root of 1980610001 is about 1255.8361757148.

Adding to 1980610001 its reverse (1000160891), we get a palindrome (2980770892).

The spelling of 1980610001 in words is "one billion, nine hundred eighty million, six hundred ten thousand, one".