18970967 has 2 divisors, whose sum is σ = 18970968. Its totient is φ = 18970966.

The previous prime is 18970961. The next prime is 18971003. The reversal of 18970967 is 76907981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18970967 - 2⁴ = 18970951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18970961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9485483 + 9485484.

It is an arithmetic number, because the mean of its divisors is an integer number (9485484).

Almost surely, 2^18970967 is an apocalyptic number.

18970967 is a deficient number, since it is larger than the sum of its proper divisors (1).

18970967 is an equidigital number, since it uses as much as digits as its factorization.

18970967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 18970967 is about 4355.5673568434. The cubic root of 18970967 is about 266.7041803128.

The spelling of 18970967 in words is "eighteen million, nine hundred seventy thousand, nine hundred sixty-seven".