1500665081 has 8 divisors (see below), whose sum is σ = 1549996800. Its totient is φ = 1451391120.

The previous prime is 1500665069. The next prime is 1500665093. The reversal of 1500665081 is 1805660051.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1500665069) and next prime (1500665093).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1500665081 is a prime.

It is a super-2 number, since 2×1500665081² = 4503991370665473122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1500665051) 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, 41930 + ... + 68988.

It is an arithmetic number, because the mean of its divisors is an integer number (193749600).

Almost surely, 2^1500665081 is an apocalyptic number.

It is an amenable number.

1500665081 is a deficient number, since it is larger than the sum of its proper divisors (49331719).

1500665081 is a wasteful number, since it uses less digits than its factorization.

1500665081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28879.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1500665081 is about 38738.4186693262. The cubic root of 1500665081 is about 1144.8834014866.

The spelling of 1500665081 in words is "one billion, five hundred million, six hundred sixty-five thousand, eighty-one".