18970043 has 2 divisors, whose sum is σ = 18970044. Its totient is φ = 18970042.

The previous prime is 18970027. The next prime is 18970051. The reversal of 18970043 is 34007981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18970043 - 2⁴ = 18970027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18969991 and 18970009.

It is not a weakly prime, because it can be changed into another prime (18970243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9485021 + 9485022.

It is an arithmetic number, because the mean of its divisors is an integer number (9485022).

Almost surely, 2^18970043 is an apocalyptic number.

18970043 is a deficient number, since it is larger than the sum of its proper divisors (1).

18970043 is an equidigital number, since it uses as much as digits as its factorization.

18970043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 18970043 is about 4355.4612844106. The cubic root of 18970043 is about 266.6998502108.

The spelling of 18970043 in words is "eighteen million, nine hundred seventy thousand, forty-three".