109185740 has 24 divisors (see below), whose sum is σ = 229557552. Its totient is φ = 43623360.

The previous prime is 109185709. The next prime is 109185743. The reversal of 109185740 is 47581901.

It is a self number, because there is not a number n which added to its sum of digits gives 109185740.

It is not an unprimeable number, because it can be changed into a prime (109185743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17747 + ... + 23093.

It is an arithmetic number, because the mean of its divisors is an integer number (9564898).

Almost surely, 2^109185740 is an apocalyptic number.

109185740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109185740 is an abundant number, since it is smaller than the sum of its proper divisors (120371812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109185740 is a wasteful number, since it uses less digits than its factorization.

109185740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377 (or 6375 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 109185740 is about 10449.1980553533. The cubic root of 109185740 is about 477.9567954041.

The spelling of 109185740 in words is "one hundred nine million, one hundred eighty-five thousand, seven hundred forty".