10918987 has 4 divisors (see below), whose sum is σ = 10964536. Its totient is φ = 10873440.

The previous prime is 10918967. The next prime is 10918991. The reversal of 10918987 is 78981901.

10918987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78981901 = 1061 ⋅74441.

It is a cyclic number.

It is not a de Polignac number, because 10918987 - 2¹⁵ = 10886219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10918907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22413 + ... + 22894.

It is an arithmetic number, because the mean of its divisors is an integer number (2741134).

Almost surely, 2^10918987 is an apocalyptic number.

10918987 is a deficient number, since it is larger than the sum of its proper divisors (45549).

10918987 is an equidigital number, since it uses as much as digits as its factorization.

10918987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45548.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 10918987 is about 3304.3890509442. The cubic root of 10918987 is about 221.8506895801.

The spelling of 10918987 in words is "ten million, nine hundred eighteen thousand, nine hundred eighty-seven".