980535961 has 2 divisors, whose sum is σ = 980535962. Its totient is φ = 980535960.

The previous prime is 980535889. The next prime is 980535967. The reversal of 980535961 is 169535089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 554319936 + 426216025 = 23544^2 + 20645^2 .

It is an emirp because it is prime and its reverse (169535089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 980535961 - 2⁷ = 980535833 is a prime.

It is a super-2 number, since 2×980535961² = 1922901541628387042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (980535967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490267980 + 490267981.

It is an arithmetic number, because the mean of its divisors is an integer number (490267981).

Almost surely, 2^980535961 is an apocalyptic number.

It is an amenable number.

980535961 is a deficient number, since it is larger than the sum of its proper divisors (1).

980535961 is an equidigital number, since it uses as much as digits as its factorization.

980535961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 980535961 is about 31313.5108379754. The cubic root of 980535961 is about 993.4694315145.

The spelling of 980535961 in words is "nine hundred eighty million, five hundred thirty-five thousand, nine hundred sixty-one".