1980410101 has 4 divisors (see below), whose sum is σ = 2066514912. Its totient is φ = 1894305292.

The previous prime is 1980410099. The next prime is 1980410119. The reversal of 1980410101 is 1010140891.

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.

It is a cyclic number.

It is not a de Polignac number, because 1980410101 - 2¹ = 1980410099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980410161) 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, 43052371 + ... + 43052416.

It is an arithmetic number, because the mean of its divisors is an integer number (516628728).

Almost surely, 2^1980410101 is an apocalyptic number.

It is an amenable number.

1980410101 is a deficient number, since it is larger than the sum of its proper divisors (86104811).

1980410101 is an equidigital number, since it uses as much as digits as its factorization.

1980410101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86104810.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 1980410101 is about 44501.7988512824. The cubic root of 1980410101 is about 1255.7939244054.

Adding to 1980410101 its reverse (1010140891), we get a palindrome (2990550992).

The spelling of 1980410101 in words is "one billion, nine hundred eighty million, four hundred ten thousand, one hundred one".