2190927551 has 2 divisors, whose sum is σ = 2190927552. Its totient is φ = 2190927550.

The previous prime is 2190927521. The next prime is 2190927553. The reversal of 2190927551 is 1557290912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2190927551 - 2²² = 2186733247 is a prime.

Together with 2190927553, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2190927499 and 2190927508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190927553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095463775 + 1095463776.

It is an arithmetic number, because the mean of its divisors is an integer number (1095463776).

Almost surely, 2^2190927551 is an apocalyptic number.

2190927551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190927551 is an equidigital number, since it uses as much as digits as its factorization.

2190927551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 2190927551 is about 46807.3450539549. The cubic root of 2190927551 is about 1298.8011731160.

The spelling of 2190927551 in words is "two billion, one hundred ninety million, nine hundred twenty-seven thousand, five hundred fifty-one".