2012453581 has 2 divisors, whose sum is σ = 2012453582. Its totient is φ = 2012453580.

The previous prime is 2012453551. The next prime is 2012453587. The reversal of 2012453581 is 1853542102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1883994025 + 128459556 = 43405^2 + 11334^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012453581 - 2⁷ = 2012453453 is a prime.

It is a super-2 number, since 2×2012453581² = 8099938831359447122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012453587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006226790 + 1006226791.

It is an arithmetic number, because the mean of its divisors is an integer number (1006226791).

Almost surely, 2^2012453581 is an apocalyptic number.

It is an amenable number.

2012453581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012453581 is an equidigital number, since it uses as much as digits as its factorization.

2012453581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 2012453581 is about 44860.3787433856. The cubic root of 2012453581 is about 1262.5307288668.

Adding to 2012453581 its reverse (1853542102), we get a palindrome (3865995683).

The spelling of 2012453581 in words is "two billion, twelve million, four hundred fifty-three thousand, five hundred eighty-one".