1098535297 has 4 divisors (see below), whose sum is σ = 1098913536. Its totient is φ = 1098157060.

The previous prime is 1098535267. The next prime is 1098535301. The reversal of 1098535297 is 7925358901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7925358901 = 157 ⋅50479993.

It is a cyclic number.

It is not a de Polignac number, because 1098535297 - 2¹⁵ = 1098502529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098535297.

It is not an unprimeable number, because it can be changed into a prime (1098535267) 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, 184729 + ... + 190582.

It is an arithmetic number, because the mean of its divisors is an integer number (274728384).

Almost surely, 2^1098535297 is an apocalyptic number.

It is an amenable number.

1098535297 is a deficient number, since it is larger than the sum of its proper divisors (378239).

1098535297 is an equidigital number, since it uses as much as digits as its factorization.

1098535297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378238.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 1098535297 is about 33144.1593195543. The cubic root of 1098535297 is about 1031.8217350406.

The spelling of 1098535297 in words is "one billion, ninety-eight million, five hundred thirty-five thousand, two hundred ninety-seven".