1328737015 has 4 divisors (see below), whose sum is σ = 1594484424. Its totient is φ = 1062989608.

The previous prime is 1328736989. The next prime is 1328737027. The reversal of 1328737015 is 5107378231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5107378231 = 53 ⋅96365627.

It is a cyclic number.

It is not a de Polignac number, because 1328737015 - 2⁹ = 1328736503 is a prime.

It is a super-2 number, since 2×1328737015² = 3531084110062220450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132873697 + ... + 132873706.

It is an arithmetic number, because the mean of its divisors is an integer number (398621106).

Almost surely, 2^1328737015 is an apocalyptic number.

1328737015 is a deficient number, since it is larger than the sum of its proper divisors (265747409).

1328737015 is an equidigital number, since it uses as much as digits as its factorization.

1328737015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265747408.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 1328737015 is about 36451.8451522005. The cubic root of 1328737015 is about 1099.3762345090.

The spelling of 1328737015 in words is "one billion, three hundred twenty-eight million, seven hundred thirty-seven thousand, fifteen".