47381519 has 2 divisors, whose sum is σ = 47381520. Its totient is φ = 47381518.

The previous prime is 47381513. The next prime is 47381531. The reversal of 47381519 is 91518374.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47381519 - 2⁸ = 47381263 is a prime.

It is a super-2 number, since 2×47381519² = 4490016685494722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47381513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23690759 + 23690760.

It is an arithmetic number, because the mean of its divisors is an integer number (23690760).

Almost surely, 2^47381519 is an apocalyptic number.

47381519 is a deficient number, since it is larger than the sum of its proper divisors (1).

47381519 is an equidigital number, since it uses as much as digits as its factorization.

47381519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 47381519 is about 6883.4234941634. The cubic root of 47381519 is about 361.8564569314.

The spelling of 47381519 in words is "forty-seven million, three hundred eighty-one thousand, five hundred nineteen".