2102890481 has 2 divisors, whose sum is σ = 2102890482. Its totient is φ = 2102890480.

The previous prime is 2102890459. The next prime is 2102890501. The reversal of 2102890481 is 1840982012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2053539856 + 49350625 = 45316^2 + 7025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102890481 - 2³⁰ = 1029148657 is a prime.

It is a super-2 number, since 2×2102890481² = 8844296750160822722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2102890411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051445240 + 1051445241.

It is an arithmetic number, because the mean of its divisors is an integer number (1051445241).

Almost surely, 2^2102890481 is an apocalyptic number.

It is an amenable number.

2102890481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102890481 is an equidigital number, since it uses as much as digits as its factorization.

2102890481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 2102890481 is about 45857.2838380120. The cubic root of 2102890481 is about 1281.1664336820.

The spelling of 2102890481 in words is "two billion, one hundred two million, eight hundred ninety thousand, four hundred eighty-one".