18030137 has 8 divisors (see below), whose sum is σ = 19323456. Its totient is φ = 16779312.

The previous prime is 18030121. The next prime is 18030143. The reversal of 18030137 is 73103081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18030137 - 2⁴ = 18030121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18030157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9743 + ... + 11444.

It is an arithmetic number, because the mean of its divisors is an integer number (2415432).

Almost surely, 2^18030137 is an apocalyptic number.

It is an amenable number.

18030137 is a deficient number, since it is larger than the sum of its proper divisors (1293319).

18030137 is a wasteful number, since it uses less digits than its factorization.

18030137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21247.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 18030137 is about 4246.1908812487. The cubic root of 18030137 is about 262.2203195051.

The spelling of 18030137 in words is "eighteen million, thirty thousand, one hundred thirty-seven".