109013638 has 4 divisors (see below), whose sum is σ = 163520460. Its totient is φ = 54506818.

The previous prime is 109013617. The next prime is 109013647. The reversal of 109013638 is 836310901.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27253408 + ... + 27253411.

It is an arithmetic number, because the mean of its divisors is an integer number (40880115).

Almost surely, 2^109013638 is an apocalyptic number.

109013638 is a deficient number, since it is larger than the sum of its proper divisors (54506822).

109013638 is an equidigital number, since it uses as much as digits as its factorization.

109013638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54506821.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 109013638 is about 10440.9596302256. The cubic root of 109013638 is about 477.7055398306.

The spelling of 109013638 in words is "one hundred nine million, thirteen thousand, six hundred thirty-eight".