1015481249 has 4 divisors (see below), whose sum is σ = 1039097136. Its totient is φ = 991865364.

The previous prime is 1015481231. The next prime is 1015481267. The reversal of 1015481249 is 9421845101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9421845101 = 2851 ⋅3304751.

It is an interprime number because it is at equal distance from previous prime (1015481231) and next prime (1015481267).

It is a cyclic number.

It is not a de Polignac number, because 1015481249 - 2¹² = 1015477153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015481209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11807879 + ... + 11807964.

It is an arithmetic number, because the mean of its divisors is an integer number (259774284).

Almost surely, 2^1015481249 is an apocalyptic number.

It is an amenable number.

1015481249 is a deficient number, since it is larger than the sum of its proper divisors (23615887).

1015481249 is an equidigital number, since it uses as much as digits as its factorization.

1015481249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23615886.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1015481249 is about 31866.6165289006. The cubic root of 1015481249 is about 1005.1340131349.

The spelling of 1015481249 in words is "one billion, fifteen million, four hundred eighty-one thousand, two hundred forty-nine".