109155812 has 6 divisors (see below), whose sum is σ = 191022678. Its totient is φ = 54577904.

The previous prime is 109155803. The next prime is 109155829. The reversal of 109155812 is 218551901.

It can be written as a sum of positive squares in only one way, i.e., 77862976 + 31292836 = 8824^2 + 5594^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13644473 + ... + 13644480.

It is an arithmetic number, because the mean of its divisors is an integer number (31837113).

Almost surely, 2^109155812 is an apocalyptic number.

It is an amenable number.

109155812 is a deficient number, since it is larger than the sum of its proper divisors (81866866).

109155812 is a wasteful number, since it uses less digits than its factorization.

109155812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27288957 (or 27288955 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 32.

The square root of 109155812 is about 10447.7658855853. The cubic root of 109155812 is about 477.9131218190.

The spelling of 109155812 in words is "one hundred nine million, one hundred fifty-five thousand, eight hundred twelve".