109180997 has 2 divisors, whose sum is σ = 109180998. Its totient is φ = 109180996.

The previous prime is 109180993. The next prime is 109181041. The reversal of 109180997 is 799081901.

It is an a-pointer prime, because the next prime (109181041) can be obtained adding 109180997 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102596641 + 6584356 = 10129^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 109180997 - 2² = 109180993 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109180993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54590498 + 54590499.

It is an arithmetic number, because the mean of its divisors is an integer number (54590499).

Almost surely, 2^109180997 is an apocalyptic number.

It is an amenable number.

109180997 is a deficient number, since it is larger than the sum of its proper divisors (1).

109180997 is an equidigital number, since it uses as much as digits as its factorization.

109180997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 109180997 is about 10448.9710976727. The cubic root of 109180997 is about 477.9498745311.

The spelling of 109180997 in words is "one hundred nine million, one hundred eighty thousand, nine hundred ninety-seven".