18148723 has 2 divisors, whose sum is σ = 18148724. Its totient is φ = 18148722.

The previous prime is 18148717. The next prime is 18148727. The reversal of 18148723 is 32784181.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18148723 - 2¹³ = 18140531 is a prime.

It is a super-2 number, since 2×18148723² = 658752293061458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18148727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9074361 + 9074362.

It is an arithmetic number, because the mean of its divisors is an integer number (9074362).

Almost surely, 2^18148723 is an apocalyptic number.

18148723 is a deficient number, since it is larger than the sum of its proper divisors (1).

18148723 is an equidigital number, since it uses as much as digits as its factorization.

18148723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 18148723 is about 4260.1318054727. The cubic root of 18148723 is about 262.7939467557.

The spelling of 18148723 in words is "eighteen million, one hundred forty-eight thousand, seven hundred twenty-three".