18470101 has 4 divisors (see below), whose sum is σ = 19890892. Its totient is φ = 17049312.

The previous prime is 18470099. The next prime is 18470113. The reversal of 18470101 is 10107481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10107481 = 727 ⋅13903.

It can be written as a sum of positive squares in 2 ways, for example, as 11553201 + 6916900 = 3399^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 18470101 - 2¹ = 18470099 is a prime.

It is a super-2 number, since 2×18470101² = 682289261900402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18470161) 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 in 3 ways as a sum of consecutive naturals, for example, 710376 + ... + 710401.

It is an arithmetic number, because the mean of its divisors is an integer number (4972723).

Almost surely, 2^18470101 is an apocalyptic number.

It is an amenable number.

18470101 is a deficient number, since it is larger than the sum of its proper divisors (1420791).

18470101 is a wasteful number, since it uses less digits than its factorization.

18470101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420790.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 18470101 is about 4297.6855399156. The cubic root of 18470101 is about 264.3360666940.

Adding to 18470101 its reverse (10107481), we get a palindrome (28577582).

The spelling of 18470101 in words is "eighteen million, four hundred seventy thousand, one hundred one".