1013665987 has 4 divisors (see below), whose sum is σ = 1073293416. Its totient is φ = 954038560.

The previous prime is 1013665957. The next prime is 1013666039. The reversal of 1013665987 is 7895663101.

It is a happy number.

1013665987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1013665987 - 2¹⁹ = 1013141699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013665907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29813689 + ... + 29813722.

It is an arithmetic number, because the mean of its divisors is an integer number (268323354).

Almost surely, 2^1013665987 is an apocalyptic number.

1013665987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1013665987 is a deficient number, since it is larger than the sum of its proper divisors (59627429).

1013665987 is an equidigital number, since it uses as much as digits as its factorization.

1013665987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59627428.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1013665987 is about 31838.1215997427. The cubic root of 1013665987 is about 1004.5347341028.

The spelling of 1013665987 in words is "one billion, thirteen million, six hundred sixty-five thousand, nine hundred eighty-seven".