109553819 has 4 divisors (see below), whose sum is σ = 109574760. Its totient is φ = 109532880.

The previous prime is 109553789. The next prime is 109553833. The reversal of 109553819 is 918355901.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 109553819 - 2¹⁶ = 109488283 is a prime.

It is a super-2 number, since 2×109553819² = 24004078514969522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109553849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4847 + ... + 15575.

It is an arithmetic number, because the mean of its divisors is an integer number (27393690).

Almost surely, 2^109553819 is an apocalyptic number.

109553819 is a deficient number, since it is larger than the sum of its proper divisors (20941).

109553819 is a wasteful number, since it uses less digits than its factorization.

109553819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20940.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 109553819 is about 10466.7960236168. The cubic root of 109553819 is about 478.4932773636.

The spelling of 109553819 in words is "one hundred nine million, five hundred fifty-three thousand, eight hundred nineteen".