2195980477 has 2 divisors, whose sum is σ = 2195980478. Its totient is φ = 2195980476.

The previous prime is 2195980471. The next prime is 2195980529. The reversal of 2195980477 is 7740895912.

It is an a-pointer prime, because the next prime (2195980529) can be obtained adding 2195980477 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2144986596 + 50993881 = 46314^2 + 7141^2 .

It is a cyclic number.

It is not a de Polignac number, because 2195980477 - 2⁷ = 2195980349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2195980471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097990238 + 1097990239.

It is an arithmetic number, because the mean of its divisors is an integer number (1097990239).

Almost surely, 2^2195980477 is an apocalyptic number.

It is an amenable number.

2195980477 is a deficient number, since it is larger than the sum of its proper divisors (1).

2195980477 is an equidigital number, since it uses as much as digits as its factorization.

2195980477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 2195980477 is about 46861.2897496430. The cubic root of 2195980477 is about 1299.7988795375.

The spelling of 2195980477 in words is "two billion, one hundred ninety-five million, nine hundred eighty thousand, four hundred seventy-seven".