262673981 has 2 divisors, whose sum is σ = 262673982. Its totient is φ = 262673980.

The previous prime is 262673951. The next prime is 262674019. The reversal of 262673981 is 189376262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258405625 + 4268356 = 16075^2 + 2066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-262673981 is a prime.

It is a super-2 number, since 2×262673981² = 137995240588776722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262673911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131336990 + 131336991.

It is an arithmetic number, because the mean of its divisors is an integer number (131336991).

Almost surely, 2^262673981 is an apocalyptic number.

It is an amenable number.

262673981 is a deficient number, since it is larger than the sum of its proper divisors (1).

262673981 is an equidigital number, since it uses as much as digits as its factorization.

262673981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 262673981 is about 16207.2200268893. The cubic root of 262673981 is about 640.4310093127.

The spelling of 262673981 in words is "two hundred sixty-two million, six hundred seventy-three thousand, nine hundred eighty-one".