47813189 has 2 divisors, whose sum is σ = 47813190. Its totient is φ = 47813188.

The previous prime is 47813179. The next prime is 47813201. The reversal of 47813189 is 98131874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38962564 + 8850625 = 6242^2 + 2975^2 .

It is a cyclic number.

It is not a de Polignac number, because 47813189 - 2¹⁶ = 47747653 is a prime.

It is a super-2 number, since 2×47813189² = 4572202084699442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_2877593 and since 47813189 and 2877593 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47813179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23906594 + 23906595.

It is an arithmetic number, because the mean of its divisors is an integer number (23906595).

Almost surely, 2^47813189 is an apocalyptic number.

It is an amenable number.

47813189 is a deficient number, since it is larger than the sum of its proper divisors (1).

47813189 is an equidigital number, since it uses as much as digits as its factorization.

47813189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 47813189 is about 6914.7081644853. The cubic root of 47813189 is about 362.9520359994.

The spelling of 47813189 in words is "forty-seven million, eight hundred thirteen thousand, one hundred eighty-nine".