2191982701 has 8 divisors (see below), whose sum is σ = 2213051904. Its totient is φ = 2170943040.

The previous prime is 2191982693. The next prime is 2191982717. The reversal of 2191982701 is 1072891912.

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

It is a cyclic number.

It is not a de Polignac number, because 2191982701 - 2³ = 2191982693 is a prime.

It is a super-2 number, since 2×2191982701² = 9609576322966510802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191982801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159630 + ... + 172816.

It is an arithmetic number, because the mean of its divisors is an integer number (276631488).

Almost surely, 2^2191982701 is an apocalyptic number.

It is an amenable number.

2191982701 is a deficient number, since it is larger than the sum of its proper divisors (21069203).

2191982701 is a wasteful number, since it uses less digits than its factorization.

2191982701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771.

The product of its (nonzero) digits is 18144, while the sum is 40.

The square root of 2191982701 is about 46818.6148983500. The cubic root of 2191982701 is about 1299.0096403953.

The spelling of 2191982701 in words is "two billion, one hundred ninety-one million, nine hundred eighty-two thousand, seven hundred one".