1013593991 has 4 divisors (see below), whose sum is σ = 1013777184. Its totient is φ = 1013410800.

The previous prime is 1013593967. The next prime is 1013594017. The reversal of 1013593991 is 1993953101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1993953101 = 7 ⋅284850443.

It is a cyclic number.

It is not a de Polignac number, because 1013593991 - 2⁶ = 1013593927 is a prime.

It is a super-5 number, since 5×1013593991⁵ (a number of 46 digits) contains 55555 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 (1013593901) 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 3 ways as a sum of consecutive naturals, for example, 83030 + ... + 94451.

It is an arithmetic number, because the mean of its divisors is an integer number (253444296).

Almost surely, 2^1013593991 is an apocalyptic number.

1013593991 is a deficient number, since it is larger than the sum of its proper divisors (183193).

1013593991 is an equidigital number, since it uses as much as digits as its factorization.

1013593991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183192.

The product of its (nonzero) digits is 32805, while the sum is 41.

The square root of 1013593991 is about 31836.9909225102. The cubic root of 1013593991 is about 1004.5109510566.

The spelling of 1013593991 in words is "one billion, thirteen million, five hundred ninety-three thousand, nine hundred ninety-one".