1098499823 has 8 divisors (see below), whose sum is σ = 1102701600. Its totient is φ = 1094305888.

The previous prime is 1098499811. The next prime is 1098499867. The reversal of 1098499823 is 3289948901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1098499823 - 2⁴ = 1098499807 is a prime.

It is a super-2 number, since 2×1098499823² = 2413403722262062658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098499873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474593 + ... + 476901.

It is an arithmetic number, because the mean of its divisors is an integer number (137837700).

Almost surely, 2^1098499823 is an apocalyptic number.

1098499823 is a deficient number, since it is larger than the sum of its proper divisors (4201777).

1098499823 is a wasteful number, since it uses less digits than its factorization.

1098499823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 1098499823 is about 33143.6241681564. The cubic root of 1098499823 is about 1031.8106283612.

The spelling of 1098499823 in words is "one billion, ninety-eight million, four hundred ninety-nine thousand, eight hundred twenty-three".