1960977281 has 2 divisors, whose sum is σ = 1960977282. Its totient is φ = 1960977280.

The previous prime is 1960977259. The next prime is 1960977283. The reversal of 1960977281 is 1827790691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1638954256 + 322023025 = 40484^2 + 17945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1960977281 is a prime.

It is a super-2 number, since 2×1960977281² = 7690863793196305922, which contains 22 as substring.

Together with 1960977283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1960977283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980488640 + 980488641.

It is an arithmetic number, because the mean of its divisors is an integer number (980488641).

Almost surely, 2^1960977281 is an apocalyptic number.

It is an amenable number.

1960977281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1960977281 is an equidigital number, since it uses as much as digits as its factorization.

1960977281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 50.

The square root of 1960977281 is about 44282.9231307058. The cubic root of 1960977281 is about 1251.6729133699.

The spelling of 1960977281 in words is "one billion, nine hundred sixty million, nine hundred seventy-seven thousand, two hundred eighty-one".