18714137 has 4 divisors (see below), whose sum is σ = 20153700. Its totient is φ = 17274576.

The previous prime is 18714103. The next prime is 18714139. The reversal of 18714137 is 73141781.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73141781 = 4019 ⋅18199.

It can be written as a sum of positive squares in 2 ways, for example, as 3182656 + 15531481 = 1784^2 + 3941^2 .

It is a cyclic number.

It is not a de Polignac number, because 18714137 - 2¹⁰ = 18713113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18714139) 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, 719762 + ... + 719787.

It is an arithmetic number, because the mean of its divisors is an integer number (5038425).

Almost surely, 2^18714137 is an apocalyptic number.

It is an amenable number.

18714137 is a deficient number, since it is larger than the sum of its proper divisors (1439563).

18714137 is a wasteful number, since it uses less digits than its factorization.

18714137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439562.

The product of its digits is 4704, while the sum is 32.

The square root of 18714137 is about 4325.9839343206. The cubic root of 18714137 is about 265.4951558611.

The spelling of 18714137 in words is "eighteen million, seven hundred fourteen thousand, one hundred thirty-seven".