1008115261 has 8 divisors (see below), whose sum is σ = 1022513184. Its totient is φ = 993771120.

The previous prime is 1008115259. The next prime is 1008115271. The reversal of 1008115261 is 1625118001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1008115261 - 2¹ = 1008115259 is a prime.

It is a super-2 number, since 2×1008115261² = 2032592758922196242, which contains 22 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 (1008115211) 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, 25090 + ... + 51436.

It is an arithmetic number, because the mean of its divisors is an integer number (127814148).

Almost surely, 2^1008115261 is an apocalyptic number.

It is an amenable number.

1008115261 is a deficient number, since it is larger than the sum of its proper divisors (14397923).

1008115261 is an equidigital number, since it uses as much as digits as its factorization.

1008115261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26891.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 1008115261 is about 31750.8308710182. The cubic root of 1008115261 is about 1002.6978023177.

The spelling of 1008115261 in words is "one billion, eight million, one hundred fifteen thousand, two hundred sixty-one".