47162018 has 4 divisors (see below), whose sum is σ = 70743030. Its totient is φ = 23581008.

The previous prime is 47161993. The next prime is 47162039. The reversal of 47162018 is 81026174.

47162018 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.

It can be written as a sum of positive squares in only one way, i.e., 38477209 + 8684809 = 6203^2 + 2947^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11790503 + ... + 11790506.

Almost surely, 2^47162018 is an apocalyptic number.

47162018 is a deficient number, since it is larger than the sum of its proper divisors (23581012).

47162018 is a wasteful number, since it uses less digits than its factorization.

47162018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23581011.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 47162018 is about 6867.4608116829. The cubic root of 47162018 is about 361.2968095855.

The spelling of 47162018 in words is "forty-seven million, one hundred sixty-two thousand, eighteen".