536373981 has 40 divisors (see below), whose sum is σ = 941349024. Its totient is φ = 300062880.

The previous prime is 536373967. The next prime is 536374001. The reversal of 536373981 is 189373635.

536373981 is a `hidden beast` number, since 5 + 3 + 637 + 3 + 9 + 8 + 1 = 666.

It is not a de Polignac number, because 536373981 - 2⁷ = 536373853 is a prime.

It is a super-2 number, since 2×536373981² = 575394094987576722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536373911) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11571 + ... + 34736.

Almost surely, 2^536373981 is an apocalyptic number.

It is an amenable number.

536373981 is a deficient number, since it is larger than the sum of its proper divisors (404975043).

536373981 is a wasteful number, since it uses less digits than its factorization.

536373981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46343 (or 46334 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 536373981 is about 23159.7491566727. The cubic root of 536373981 is about 812.4984992793.

The spelling of 536373981 in words is "five hundred thirty-six million, three hundred seventy-three thousand, nine hundred eighty-one".