1097120187 has 16 divisors (see below), whose sum is σ = 1648258560. Its totient is φ = 721110600.

The previous prime is 1097120183. The next prime is 1097120209. The reversal of 1097120187 is 7810217901.

It is not a de Polignac number, because 1097120187 - 2² = 1097120183 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1097120183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284239 + ... + 288072.

It is an arithmetic number, because the mean of its divisors is an integer number (103016160).

Almost surely, 2^1097120187 is an apocalyptic number.

1097120187 is a deficient number, since it is larger than the sum of its proper divisors (551138373).

1097120187 is an equidigital number, since it uses as much as digits as its factorization.

1097120187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572391 (or 572385 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The square root of 1097120187 is about 33122.8046366850. The cubic root of 1097120187 is about 1031.3784876600.

The spelling of 1097120187 in words is "one billion, ninety-seven million, one hundred twenty thousand, one hundred eighty-seven".