1500065481 has 4 divisors (see below), whose sum is σ = 2000087312. Its totient is φ = 1000043652.

The previous prime is 1500065467. The next prime is 1500065491. The reversal of 1500065481 is 1845600051.

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.

It is not a de Polignac number, because 1500065481 - 2⁷ = 1500065353 is a prime.

It is a super-2 number, since 2×1500065481² = 4500392894575522722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1500065491) 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, 250010911 + ... + 250010916.

It is an arithmetic number, because the mean of its divisors is an integer number (500021828).

Almost surely, 2^1500065481 is an apocalyptic number.

It is an amenable number.

1500065481 is a deficient number, since it is larger than the sum of its proper divisors (500021831).

1500065481 is an equidigital number, since it uses as much as digits as its factorization.

1500065481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500021830.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1500065481 is about 38730.6788089236. The cubic root of 1500065481 is about 1144.7308994295.

The spelling of 1500065481 in words is "one billion, five hundred million, sixty-five thousand, four hundred eighty-one".