1812696481 has 2 divisors, whose sum is σ = 1812696482. Its totient is φ = 1812696480.

The previous prime is 1812696467. The next prime is 1812696491. The reversal of 1812696481 is 1846962181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1442480400 + 370216081 = 37980^2 + 19241^2 .

It is a cyclic number.

It is not a de Polignac number, because 1812696481 - 2¹⁷ = 1812565409 is a prime.

It is a super-2 number, since 2×1812696481² = 6571737064459566722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1812696421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906348240 + 906348241.

It is an arithmetic number, because the mean of its divisors is an integer number (906348241).

Almost surely, 2^1812696481 is an apocalyptic number.

It is an amenable number.

1812696481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812696481 is an equidigital number, since it uses as much as digits as its factorization.

1812696481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 46.

The square root of 1812696481 is about 42575.7734046018. The cubic root of 1812696481 is about 1219.2937955791.

The spelling of 1812696481 in words is "one billion, eight hundred twelve million, six hundred ninety-six thousand, four hundred eighty-one".