537626381 has 2 divisors, whose sum is σ = 537626382. Its totient is φ = 537626380.

The previous prime is 537626351. The next prime is 537626387. The reversal of 537626381 is 183626735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493284100 + 44342281 = 22210^2 + 6659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-537626381 is a prime.

It is a super-2 number, since 2×537626381² = 578084251094314322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (537626387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268813190 + 268813191.

It is an arithmetic number, because the mean of its divisors is an integer number (268813191).

Almost surely, 2^537626381 is an apocalyptic number.

It is an amenable number.

537626381 is a deficient number, since it is larger than the sum of its proper divisors (1).

537626381 is an equidigital number, since it uses as much as digits as its factorization.

537626381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 537626381 is about 23186.7716812841. The cubic root of 537626381 is about 813.1303856075.

The spelling of 537626381 in words is "five hundred thirty-seven million, six hundred twenty-six thousand, three hundred eighty-one".