1812494351 has 2 divisors, whose sum is σ = 1812494352. Its totient is φ = 1812494350.

The previous prime is 1812494291. The next prime is 1812494357. The reversal of 1812494351 is 1534942181.

It is a strong prime.

It is an emirp because it is prime and its reverse (1534942181) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1812494351 is a prime.

It is a super-2 number, since 2×1812494351² = 6570271544813822402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1812494357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906247175 + 906247176.

It is an arithmetic number, because the mean of its divisors is an integer number (906247176).

Almost surely, 2^1812494351 is an apocalyptic number.

1812494351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812494351 is an equidigital number, since it uses as much as digits as its factorization.

1812494351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 1812494351 is about 42573.3995706239. The cubic root of 1812494351 is about 1219.2484735927.

The spelling of 1812494351 in words is "one billion, eight hundred twelve million, four hundred ninety-four thousand, three hundred fifty-one".