1816652531 has 2 divisors, whose sum is σ = 1816652532. Its totient is φ = 1816652530.

The previous prime is 1816652489. The next prime is 1816652543. The reversal of 1816652531 is 1352566181.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1816652531 is a prime.

It is a super-2 number, since 2×1816652531² = 6600452836777411922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1816652581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 908326265 + 908326266.

It is an arithmetic number, because the mean of its divisors is an integer number (908326266).

Almost surely, 2^1816652531 is an apocalyptic number.

1816652531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1816652531 is an equidigital number, since it uses as much as digits as its factorization.

1816652531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 38.

The square root of 1816652531 is about 42622.2070170000. The cubic root of 1816652531 is about 1220.1801514401.

The spelling of 1816652531 in words is "one billion, eight hundred sixteen million, six hundred fifty-two thousand, five hundred thirty-one".