1648071000787 has 4 divisors (see below), whose sum is σ = 1676004407640. Its totient is φ = 1620137593936.

The previous prime is 1648071000773. The next prime is 1648071000841. The reversal of 1648071000787 is 7870001708461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1648071000787 - 2²³ = 1648062612179 is a prime.

It is a super-3 number, since 3×1648071000787³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1648071000787.

It is not an unprimeable number, because it can be changed into a prime (1648071000187) 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, 13966703338 + ... + 13966703455.

It is an arithmetic number, because the mean of its divisors is an integer number (419001101910).

Almost surely, 2^{1648071000787} is an apocalyptic number.

1648071000787 is a deficient number, since it is larger than the sum of its proper divisors (27933406853).

1648071000787 is an equidigital number, since it uses as much as digits as its factorization.

1648071000787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27933406852.

The product of its (nonzero) digits is 526848, while the sum is 49.

The spelling of 1648071000787 in words is "one trillion, six hundred forty-eight billion, seventy-one million, seven hundred eighty-seven", and thus it is an aban number.