2190997701 has 8 divisors (see below), whose sum is σ = 3245922560. Its totient is φ = 1460665116.

The previous prime is 2190997693. The next prime is 2190997709. The reversal of 2190997701 is 1077990912.

2190997701 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2190997693) and next prime (2190997709).

It is not a de Polignac number, because 2190997701 - 2³ = 2190997693 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 (2190997709) 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, 40574005 + ... + 40574058.

It is an arithmetic number, because the mean of its divisors is an integer number (405740320).

Almost surely, 2^2190997701 is an apocalyptic number.

It is an amenable number.

2190997701 is a deficient number, since it is larger than the sum of its proper divisors (1054924859).

2190997701 is an equidigital number, since it uses as much as digits as its factorization.

2190997701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81148072 (or 81148066 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 45.

The square root of 2190997701 is about 46808.0943961619. The cubic root of 2190997701 is about 1298.8150348142.

The spelling of 2190997701 in words is "two billion, one hundred ninety million, nine hundred ninety-seven thousand, seven hundred one".