1098252459 has 16 divisors (see below), whose sum is σ = 1712675200. Its totient is φ = 693632808.

The previous prime is 1098252443. The next prime is 1098252481. The reversal of 1098252459 is 9542528901.

It is a happy number.

It is not a de Polignac number, because 1098252459 - 2⁴ = 1098252443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1098250459) 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, 1069909 + ... + 1070934.

It is an arithmetic number, because the mean of its divisors is an integer number (107042200).

Almost surely, 2^1098252459 is an apocalyptic number.

1098252459 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1098252459 is a deficient number, since it is larger than the sum of its proper divisors (614422741).

1098252459 is a wasteful number, since it uses less digits than its factorization.

1098252459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140871 (or 2140865 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1098252459 is about 33139.8922599335. The cubic root of 1098252459 is about 1031.7331736484.

The spelling of 1098252459 in words is "one billion, ninety-eight million, two hundred fifty-two thousand, four hundred fifty-nine".