1017481961 has 2 divisors, whose sum is σ = 1017481962. Its totient is φ = 1017481960.

The previous prime is 1017481931. The next prime is 1017481987. The reversal of 1017481961 is 1691847101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857611225 + 159870736 = 29285^2 + 12644^2 .

It is a cyclic number.

It is not a de Polignac number, because 1017481961 - 2¹⁴ = 1017465577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1017481921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508740980 + 508740981.

It is an arithmetic number, because the mean of its divisors is an integer number (508740981).

Almost surely, 2^1017481961 is an apocalyptic number.

It is an amenable number.

1017481961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1017481961 is an equidigital number, since it uses as much as digits as its factorization.

1017481961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 38.

The square root of 1017481961 is about 31897.9930559902. The cubic root of 1017481961 is about 1005.7936886796.

The spelling of 1017481961 in words is "one billion, seventeen million, four hundred eighty-one thousand, nine hundred sixty-one".