363987081 has 16 divisors (see below), whose sum is σ = 547291200. Its totient is φ = 239035104.

The previous prime is 363987059. The next prime is 363987083. The reversal of 363987081 is 180789363.

It is a happy number.

363987081 is a `hidden beast` number, since 3 + 639 + 8 + 7 + 0 + 8 + 1 = 666.

It is not a de Polignac number, because 363987081 - 2²⁶ = 296878217 is a prime.

It is a super-2 number, since 2×363987081² = 264973190269801122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (363987083) 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, 98796 + ... + 102413.

It is an arithmetic number, because the mean of its divisors is an integer number (34205700).

Almost surely, 2^363987081 is an apocalyptic number.

It is an amenable number.

363987081 is a deficient number, since it is larger than the sum of its proper divisors (183304119).

363987081 is a wasteful number, since it uses less digits than its factorization.

363987081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201285 (or 201279 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 363987081 is about 19078.4454555396. The cubic root of 363987081 is about 713.9952510100.

The spelling of 363987081 in words is "three hundred sixty-three million, nine hundred eighty-seven thousand, eighty-one".