1038398091 has 8 divisors (see below), whose sum is σ = 1386438144. Its totient is φ = 691311720.

The previous prime is 1038398071. The next prime is 1038398147. The reversal of 1038398091 is 1908938301.

It is a happy number.

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

It is not a de Polignac number, because 1038398091 - 2¹¹ = 1038396043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1038398071) 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, 235875 + ... + 240236.

It is an arithmetic number, because the mean of its divisors is an integer number (173304768).

Almost surely, 2^1038398091 is an apocalyptic number.

1038398091 is a deficient number, since it is larger than the sum of its proper divisors (348040053).

1038398091 is an equidigital number, since it uses as much as digits as its factorization.

1038398091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476841.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 1038398091 is about 32224.1848772005. The cubic root of 1038398091 is about 1012.6389476739.

The spelling of 1038398091 in words is "one billion, thirty-eight million, three hundred ninety-eight thousand, ninety-one".