2042574581 has 2 divisors, whose sum is σ = 2042574582. Its totient is φ = 2042574580.

The previous prime is 2042574557. The next prime is 2042574617. The reversal of 2042574581 is 1854752402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2042226481 + 348100 = 45191^2 + 590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2042574581 is a prime.

It is a super-2 number, since 2×2042574581² = 8344221837894651122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042574481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021287290 + 1021287291.

It is an arithmetic number, because the mean of its divisors is an integer number (1021287291).

Almost surely, 2^2042574581 is an apocalyptic number.

It is an amenable number.

2042574581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042574581 is an equidigital number, since it uses as much as digits as its factorization.

2042574581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 89600, while the sum is 38.

The square root of 2042574581 is about 45194.8512664883. The cubic root of 2042574581 is about 1268.7984545837.

The spelling of 2042574581 in words is "two billion, forty-two million, five hundred seventy-four thousand, five hundred eighty-one".