1009868398 has 32 divisors (see below), whose sum is σ = 1890236160. Its totient is φ = 393111360.

The previous prime is 1009868347. The next prime is 1009868407. The reversal of 1009868398 is 8938689001.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 241090 + ... + 245242.

It is an arithmetic number, because the mean of its divisors is an integer number (59069880).

Almost surely, 2^1009868398 is an apocalyptic number.

1009868398 is a deficient number, since it is larger than the sum of its proper divisors (880367762).

1009868398 is a wasteful number, since it uses less digits than its factorization.

1009868398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 1009868398 is about 31778.4266130342. The cubic root of 1009868398 is about 1003.2787043492.

The spelling of 1009868398 in words is "one billion, nine million, eight hundred sixty-eight thousand, three hundred ninety-eight".