11537819 has 2 divisors, whose sum is σ = 11537820. Its totient is φ = 11537818.

The previous prime is 11537809. The next prime is 11537833. The reversal of 11537819 is 91873511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11537819 - 2¹² = 11533723 is a prime.

It is a super-2 number, since 2×11537819² = 266242534553522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11537809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5768909 + 5768910.

It is an arithmetic number, because the mean of its divisors is an integer number (5768910).

Almost surely, 2^11537819 is an apocalyptic number.

11537819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11537819 is an equidigital number, since it uses as much as digits as its factorization.

11537819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 35.

The square root of 11537819 is about 3396.7365220164. The cubic root of 11537819 is about 225.9650336171.

The spelling of 11537819 in words is "eleven million, five hundred thirty-seven thousand, eight hundred nineteen".