18477007 has 2 divisors, whose sum is σ = 18477008. Its totient is φ = 18477006.

The previous prime is 18476993. The next prime is 18477029. The reversal of 18477007 is 70077481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18477007 - 2²³ = 10088399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18477077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9238503 + 9238504.

It is an arithmetic number, because the mean of its divisors is an integer number (9238504).

Almost surely, 2^18477007 is an apocalyptic number.

18477007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18477007 is an equidigital number, since it uses as much as digits as its factorization.

18477007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 18477007 is about 4298.4889205394. The cubic root of 18477007 is about 264.3690078133.

The spelling of 18477007 in words is "eighteen million, four hundred seventy-seven thousand, seven".