18488011 has 2 divisors, whose sum is σ = 18488012. Its totient is φ = 18488010.

The previous prime is 18487951. The next prime is 18488023. The reversal of 18488011 is 11088481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18488011 - 2⁹ = 18487499 is a prime.

It is a super-2 number, since 2×18488011² = 683613101472242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18488611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9244005 + 9244006.

It is an arithmetic number, because the mean of its divisors is an integer number (9244006).

Almost surely, 2^18488011 is an apocalyptic number.

18488011 is a deficient number, since it is larger than the sum of its proper divisors (1).

18488011 is an equidigital number, since it uses as much as digits as its factorization.

18488011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 18488011 is about 4299.7687147101. The cubic root of 18488011 is about 264.4214791406.

The spelling of 18488011 in words is "eighteen million, four hundred eighty-eight thousand, eleven".