2190554447 has 2 divisors, whose sum is σ = 2190554448. Its totient is φ = 2190554446.

The previous prime is 2190554417. The next prime is 2190554467. The reversal of 2190554447 is 7444550912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2190554447 - 2⁶ = 2190554383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190554407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095277223 + 1095277224.

It is an arithmetic number, because the mean of its divisors is an integer number (1095277224).

Almost surely, 2^2190554447 is an apocalyptic number.

2190554447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190554447 is an equidigital number, since it uses as much as digits as its factorization.

2190554447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 2190554447 is about 46803.3593559266. The cubic root of 2190554447 is about 1298.7274424833.

The spelling of 2190554447 in words is "two billion, one hundred ninety million, five hundred fifty-four thousand, four hundred forty-seven".