18070984 has 8 divisors (see below), whose sum is σ = 33883110. Its totient is φ = 9035488.

The previous prime is 18070981. The next prime is 18070999. The reversal of 18070984 is 48907081.

It can be written as a sum of positive squares in only one way, i.e., 17892900 + 178084 = 4230^2 + 422^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18070981) by changing a digit.

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, 1129429 + ... + 1129444.

Almost surely, 2^18070984 is an apocalyptic number.

It is an amenable number.

18070984 is a deficient number, since it is larger than the sum of its proper divisors (15812126).

18070984 is a wasteful number, since it uses less digits than its factorization.

18070984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258879 (or 2258875 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 18070984 is about 4250.9980004700. The cubic root of 18070984 is about 262.4181888666.

The spelling of 18070984 in words is "eighteen million, seventy thousand, nine hundred eighty-four".