536130981 has 10 divisors (see below), whose sum is σ = 800887142. Its totient is φ = 357420600.

The previous prime is 536130977. The next prime is 536131003. The reversal of 536130981 is 189031635.

It is a happy number.

536130981 is a `hidden beast` number, since 536 + 1 + 30 + 98 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 454968900 + 81162081 = 21330^2 + 9009^2 .

It is not a de Polignac number, because 536130981 - 2² = 536130977 is a prime.

It is a super-2 number, since 2×536130981² = 574872857576044722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536130901) 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 in 9 ways as a sum of consecutive naturals, for example, 3309370 + ... + 3309531.

Almost surely, 2^536130981 is an apocalyptic number.

It is an amenable number.

536130981 is a deficient number, since it is larger than the sum of its proper divisors (264756161).

536130981 is an equidigital number, since it uses as much as digits as its factorization.

536130981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6618913 (or 6618904 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 536130981 is about 23154.5023915436. The cubic root of 536130981 is about 812.3757820673.

The spelling of 536130981 in words is "five hundred thirty-six million, one hundred thirty thousand, nine hundred eighty-one".