2190927493 has 2 divisors, whose sum is σ = 2190927494. Its totient is φ = 2190927492.

The previous prime is 2190927407. The next prime is 2190927503. The reversal of 2190927493 is 3947290912.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1863389889 + 327537604 = 43167^2 + 18098^2 .

It is a cyclic number.

It is not a de Polignac number, because 2190927493 - 2⁹ = 2190926981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190927793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095463746 + 1095463747.

It is an arithmetic number, because the mean of its divisors is an integer number (1095463747).

Almost surely, 2^2190927493 is an apocalyptic number.

It is an amenable number.

2190927493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190927493 is an equidigital number, since it uses as much as digits as its factorization.

2190927493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 2190927493 is about 46807.3444343941. The cubic root of 2190927493 is about 1298.8011616550.

The spelling of 2190927493 in words is "two billion, one hundred ninety million, nine hundred twenty-seven thousand, four hundred ninety-three".