2975880781 has 2 divisors, whose sum is σ = 2975880782. Its totient is φ = 2975880780.

The previous prime is 2975880769. The next prime is 2975880797. The reversal of 2975880781 is 1870885792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1993622500 + 982258281 = 44650^2 + 31341^2 .

It is a cyclic number.

It is not a de Polignac number, because 2975880781 - 2⁷ = 2975880653 is a prime.

It is a super-2 number, since 2×2975880781² = 17711732845450339922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2975880701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1487940390 + 1487940391.

It is an arithmetic number, because the mean of its divisors is an integer number (1487940391).

Almost surely, 2^2975880781 is an apocalyptic number.

It is an amenable number.

2975880781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2975880781 is an equidigital number, since it uses as much as digits as its factorization.

2975880781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 55.

The square root of 2975880781 is about 54551.6340818495. The cubic root of 2975880781 is about 1438.3740619574.

The spelling of 2975880781 in words is "two billion, nine hundred seventy-five million, eight hundred eighty thousand, seven hundred eighty-one".