18771042 has 16 divisors (see below), whose sum is σ = 38158272. Its totient is φ = 6154320.

The previous prime is 18771041. The next prime is 18771083. The reversal of 18771042 is 24017781.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (18771041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25278 + ... + 26009.

It is an arithmetic number, because the mean of its divisors is an integer number (2384892).

Almost surely, 2^18771042 is an apocalyptic number.

18771042 is an abundant number, since it is smaller than the sum of its proper divisors (19387230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18771042 is a wasteful number, since it uses less digits than its factorization.

18771042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51353.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 18771042 is about 4332.5560584948. The cubic root of 18771042 is about 265.7639849722.

The spelling of 18771042 in words is "eighteen million, seven hundred seventy-one thousand, forty-two".