109151638 has 4 divisors (see below), whose sum is σ = 163727460. Its totient is φ = 54575818.

The previous prime is 109151633. The next prime is 109151639. The reversal of 109151638 is 836151901.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109151633) 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, 27287908 + ... + 27287911.

It is an arithmetic number, because the mean of its divisors is an integer number (40931865).

Almost surely, 2^109151638 is an apocalyptic number.

109151638 is a deficient number, since it is larger than the sum of its proper divisors (54575822).

109151638 is an equidigital number, since it uses as much as digits as its factorization.

109151638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54575821.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 109151638 is about 10447.5661280511. The cubic root of 109151638 is about 477.9070301147.

The spelling of 109151638 in words is "one hundred nine million, one hundred fifty-one thousand, six hundred thirty-eight".