1098638801 has 8 divisors (see below), whose sum is σ = 1183497000. Its totient is φ = 1013830272.

The previous prime is 1098638789. The next prime is 1098638803. The reversal of 1098638801 is 1088368901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 120450625 + 978188176 = 10975^2 + 31276^2 .

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

It is not a de Polignac number, because 1098638801 - 2¹⁰ = 1098637777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098638803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42575 + ... + 63323.

It is an arithmetic number, because the mean of its divisors is an integer number (147937125).

Almost surely, 2^1098638801 is an apocalyptic number.

It is an amenable number.

1098638801 is a deficient number, since it is larger than the sum of its proper divisors (84858199).

1098638801 is a wasteful number, since it uses less digits than its factorization.

1098638801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24835.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1098638801 is about 33145.7207041874. The cubic root of 1098638801 is about 1031.8541401056.

The spelling of 1098638801 in words is "one billion, ninety-eight million, six hundred thirty-eight thousand, eight hundred one".