537965381 has 2 divisors, whose sum is σ = 537965382. Its totient is φ = 537965380.

The previous prime is 537965371. The next prime is 537965401. The reversal of 537965381 is 183569735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460789156 + 77176225 = 21466^2 + 8785^2 .

It is a cyclic number.

It is not a de Polignac number, because 537965381 - 2¹⁴ = 537948997 is a prime.

It is a super-2 number, since 2×537965381² = 578813502308950322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (537965321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268982690 + 268982691.

It is an arithmetic number, because the mean of its divisors is an integer number (268982691).

Almost surely, 2^537965381 is an apocalyptic number.

It is an amenable number.

537965381 is a deficient number, since it is larger than the sum of its proper divisors (1).

537965381 is an equidigital number, since it uses as much as digits as its factorization.

537965381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 537965381 is about 23194.0807319454. The cubic root of 537965381 is about 813.3012559948.

The spelling of 537965381 in words is "five hundred thirty-seven million, nine hundred sixty-five thousand, three hundred eighty-one".