10891519 has 2 divisors, whose sum is σ = 10891520. Its totient is φ = 10891518.

The previous prime is 10891511. The next prime is 10891523. The reversal of 10891519 is 91519801.

It is a strong prime.

It is an emirp because it is prime and its reverse (91519801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10891519 - 2³ = 10891511 is a prime.

It is a super-2 number, since 2×10891519² = 237250372254722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10891511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5445759 + 5445760.

It is an arithmetic number, because the mean of its divisors is an integer number (5445760).

Almost surely, 2^10891519 is an apocalyptic number.

10891519 is a deficient number, since it is larger than the sum of its proper divisors (1).

10891519 is an equidigital number, since it uses as much as digits as its factorization.

10891519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 10891519 is about 3300.2301434900. The cubic root of 10891519 is about 221.6645028400.

The spelling of 10891519 in words is "ten million, eight hundred ninety-one thousand, five hundred nineteen".