2035217981 has 2 divisors, whose sum is σ = 2035217982. Its totient is φ = 2035217980.

The previous prime is 2035217971. The next prime is 2035218061. The reversal of 2035217981 is 1897125302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1481557081 + 553660900 = 38491^2 + 23530^2 .

It is a cyclic number.

It is not a de Polignac number, because 2035217981 - 2¹⁰ = 2035216957 is a prime.

It is a super-2 number, since 2×2035217981² = 8284224460371432722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2035217971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1017608990 + 1017608991.

It is an arithmetic number, because the mean of its divisors is an integer number (1017608991).

Almost surely, 2^2035217981 is an apocalyptic number.

It is an amenable number.

2035217981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2035217981 is an equidigital number, since it uses as much as digits as its factorization.

2035217981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 2035217981 is about 45113.3902627590. The cubic root of 2035217981 is about 1267.2733742268.

The spelling of 2035217981 in words is "two billion, thirty-five million, two hundred seventeen thousand, nine hundred eighty-one".