2153917563 has 16 divisors (see below), whose sum is σ = 3314029056. Its totient is φ = 1218859200.

The previous prime is 2153917559. The next prime is 2153917567. The reversal of 2153917563 is 3657193512.

It is an interprime number because it is at equal distance from previous prime (2153917559) and next prime (2153917567).

It is not a de Polignac number, because 2153917563 - 2² = 2153917559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2153917567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495738 + ... + 500063.

It is an arithmetic number, because the mean of its divisors is an integer number (207126816).

Almost surely, 2^2153917563 is an apocalyptic number.

2153917563 is a deficient number, since it is larger than the sum of its proper divisors (1160111493).

2153917563 is a wasteful number, since it uses less digits than its factorization.

2153917563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995914.

The product of its digits is 170100, while the sum is 42.

The square root of 2153917563 is about 46410.3174197290. The cubic root of 2153917563 is about 1291.4463202422.

The spelling of 2153917563 in words is "two billion, one hundred fifty-three million, nine hundred seventeen thousand, five hundred sixty-three".