1097287903 has 4 divisors (see below), whose sum is σ = 1097378968. Its totient is φ = 1097196840.

The previous prime is 1097287901. The next prime is 1097287907. The reversal of 1097287903 is 3097827901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1097287903 - 2¹ = 1097287901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097287901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24093 + ... + 52678.

It is an arithmetic number, because the mean of its divisors is an integer number (274344742).

Almost surely, 2^1097287903 is an apocalyptic number.

1097287903 is a deficient number, since it is larger than the sum of its proper divisors (91065).

1097287903 is an equidigital number, since it uses as much as digits as its factorization.

1097287903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91064.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 1097287903 is about 33125.3362699913. The cubic root of 1097287903 is about 1031.4310403529.

The spelling of 1097287903 in words is "one billion, ninety-seven million, two hundred eighty-seven thousand, nine hundred three".