537342981 has 16 divisors (see below), whose sum is σ = 830343168. Its totient is φ = 302727600.

The previous prime is 537342977. The next prime is 537343039. The reversal of 537342981 is 189243735.

It is not a de Polignac number, because 537342981 - 2² = 537342977 is a prime.

It is a super-2 number, since 2×537342981² = 577474958459932722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537342901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178705 + ... + 181686.

It is an arithmetic number, because the mean of its divisors is an integer number (51896448).

Almost surely, 2^537342981 is an apocalyptic number.

It is an amenable number.

537342981 is a deficient number, since it is larger than the sum of its proper divisors (293000187).

537342981 is a wasteful number, since it uses less digits than its factorization.

537342981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360472.

The product of its digits is 181440, while the sum is 42.

The square root of 537342981 is about 23180.6596325471. The cubic root of 537342981 is about 812.9874848482.

The spelling of 537342981 in words is "five hundred thirty-seven million, three hundred forty-two thousand, nine hundred eighty-one".