1648613701157 has 4 divisors (see below), whose sum is σ = 1648616473260. Its totient is φ = 1648610929056.

The previous prime is 1648613701153. The next prime is 1648613701201. The reversal of 1648613701157 is 7511073168461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1082461291396 + 566152409761 = 1040414^2 + 752431^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648613701157 - 2² = 1648613701153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648613701153) 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, 90032 + ... + 1818057.

It is an arithmetic number, because the mean of its divisors is an integer number (412154118315).

Almost surely, 2^{1648613701157} is an apocalyptic number.

It is an amenable number.

1648613701157 is a deficient number, since it is larger than the sum of its proper divisors (2772103).

1648613701157 is an equidigital number, since it uses as much as digits as its factorization.

1648613701157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772102.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 1648613701157 in words is "one trillion, six hundred forty-eight billion, six hundred thirteen million, seven hundred one thousand, one hundred fifty-seven".