109154881 has 4 divisors (see below), whose sum is σ = 119078064. Its totient is φ = 99231700.

The previous prime is 109154861. The next prime is 109154891. The reversal of 109154881 is 188451901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188451901 = 11 ⋅17131991.

It is a cyclic number.

It is not a de Polignac number, because 109154881 - 2⁹ = 109154369 is a prime.

It is a super-2 number, since 2×109154881² = 23829576092248322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109154881.

It is not an unprimeable number, because it can be changed into a prime (109154831) 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, 4961575 + ... + 4961596.

It is an arithmetic number, because the mean of its divisors is an integer number (29769516).

Almost surely, 2^109154881 is an apocalyptic number.

109154881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109154881 is a deficient number, since it is larger than the sum of its proper divisors (9923183).

109154881 is an equidigital number, since it uses as much as digits as its factorization.

109154881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9923182.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 109154881 is about 10447.7213305103. The cubic root of 109154881 is about 477.9117630934.

The spelling of 109154881 in words is "one hundred nine million, one hundred fifty-four thousand, eight hundred eighty-one".