1980946101 has 8 divisors (see below), whose sum is σ = 2647720960. Its totient is φ = 1317400992.

The previous prime is 1980946067. The next prime is 1980946103. The reversal of 1980946101 is 1016490891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1980946101 - 2¹³ = 1980937909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1980946101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980946103) 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 7 ways as a sum of consecutive naturals, for example, 806005 + ... + 808458.

It is an arithmetic number, because the mean of its divisors is an integer number (330965120).

Almost surely, 2^1980946101 is an apocalyptic number.

It is an amenable number.

1980946101 is a deficient number, since it is larger than the sum of its proper divisors (666774859).

1980946101 is a wasteful number, since it uses less digits than its factorization.

1980946101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614875.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1980946101 is about 44507.8206723268. The cubic root of 1980946101 is about 1255.9072081518.

The spelling of 1980946101 in words is "one billion, nine hundred eighty million, nine hundred forty-six thousand, one hundred one".