18148851 has 12 divisors (see below), whose sum is σ = 29960112. Its totient is φ = 10370736.

The previous prime is 18148849. The next prime is 18148853. The reversal of 18148851 is 15884181.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18148849) and next prime (18148853).

It is not a de Polignac number, because 18148851 - 2¹ = 18148849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18148853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143976 + ... + 144101.

It is an arithmetic number, because the mean of its divisors is an integer number (2496676).

Almost surely, 2^18148851 is an apocalyptic number.

18148851 is a deficient number, since it is larger than the sum of its proper divisors (11811261).

18148851 is a wasteful number, since it uses less digits than its factorization.

18148851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288090 (or 288087 counting only the distinct ones).

The product of its digits is 10240, while the sum is 36.

The square root of 18148851 is about 4260.1468284556. The cubic root of 18148851 is about 262.7945645686.

The spelling of 18148851 in words is "eighteen million, one hundred forty-eight thousand, eight hundred fifty-one".