2190554417 has 2 divisors, whose sum is σ = 2190554418. Its totient is φ = 2190554416.

The previous prime is 2190554413. The next prime is 2190554447. The reversal of 2190554417 is 7144550912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2145449761 + 45104656 = 46319^2 + 6716^2 .

It is a cyclic number.

It is not a de Polignac number, because 2190554417 - 2² = 2190554413 is a prime.

It is not a weakly prime, because it can be changed into another prime (2190554413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095277208 + 1095277209.

It is an arithmetic number, because the mean of its divisors is an integer number (1095277209).

Almost surely, 2^2190554417 is an apocalyptic number.

It is an amenable number.

2190554417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190554417 is an equidigital number, since it uses as much as digits as its factorization.

2190554417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 2190554417 is about 46803.3590354368. The cubic root of 2190554417 is about 1298.7274365546.

The spelling of 2190554417 in words is "two billion, one hundred ninety million, five hundred fifty-four thousand, four hundred seventeen".