109146891 has 16 divisors (see below), whose sum is σ = 173551104. Its totient is φ = 59657664.

The previous prime is 109146889. The next prime is 109146893. The reversal of 109146891 is 198641901.

It is an interprime number because it is at equal distance from previous prime (109146889) and next prime (109146893).

It is not a de Polignac number, because 109146891 - 2¹ = 109146889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109146893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112506 + ... + 113471.

It is an arithmetic number, because the mean of its divisors is an integer number (10846944).

Almost surely, 2^109146891 is an apocalyptic number.

109146891 is a deficient number, since it is larger than the sum of its proper divisors (64404213).

109146891 is a wasteful number, since it uses less digits than its factorization.

109146891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226010.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 109146891 is about 10447.3389434822. The cubic root of 109146891 is about 477.9001019622.

The spelling of 109146891 in words is "one hundred nine million, one hundred forty-six thousand, eight hundred ninety-one".