2101976261 has 8 divisors (see below), whose sum is σ = 2620645824. Its totient is φ = 1637903520.

The previous prime is 2101976243. The next prime is 2101976263. The reversal of 2101976261 is 1626791012.

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

It is not a de Polignac number, because 2101976261 - 2⁶ = 2101976197 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 (2101976263) 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, 13649120 + ... + 13649273.

It is an arithmetic number, because the mean of its divisors is an integer number (327580728).

Almost surely, 2^2101976261 is an apocalyptic number.

It is an amenable number.

2101976261 is a deficient number, since it is larger than the sum of its proper divisors (518669563).

2101976261 is a wasteful number, since it uses less digits than its factorization.

2101976261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27298411.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2101976261 is about 45847.3146541867. The cubic root of 2101976261 is about 1280.9807467647.

The spelling of 2101976261 in words is "two billion, one hundred one million, nine hundred seventy-six thousand, two hundred sixty-one".