18734107 has 4 divisors (see below), whose sum is σ = 21410416. Its totient is φ = 16057800.

The previous prime is 18734101. The next prime is 18734113. The reversal of 18734107 is 70143781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70143781 = 257 ⋅272933.

It is an interprime number because it is at equal distance from previous prime (18734101) and next prime (18734113).

It is a cyclic number.

It is not a de Polignac number, because 18734107 - 2¹¹ = 18732059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18734101) 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, 1338144 + ... + 1338157.

It is an arithmetic number, because the mean of its divisors is an integer number (5352604).

Almost surely, 2^18734107 is an apocalyptic number.

18734107 is a deficient number, since it is larger than the sum of its proper divisors (2676309).

18734107 is an equidigital number, since it uses as much as digits as its factorization.

18734107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676308.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 18734107 is about 4328.2914643078. The cubic root of 18734107 is about 265.5895595992.

Adding to 18734107 its reverse (70143781), we get a palindrome (88877888).

The spelling of 18734107 in words is "eighteen million, seven hundred thirty-four thousand, one hundred seven".