2153643471 has 40 divisors (see below), whose sum is σ = 3695436800. Its totient is φ = 1224405072.

The previous prime is 2153643461. The next prime is 2153643493. The reversal of 2153643471 is 1743463512.

2153643471 is a `hidden beast` number, since 2 + 1 + 5 + 3 + 643 + 4 + 7 + 1 = 666.

It is not a de Polignac number, because 2153643471 - 2¹⁸ = 2153381327 is a prime.

It is a super-3 number, since 3×2153643471³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153643421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 103290 + ... + 122376.

It is an arithmetic number, because the mean of its divisors is an integer number (92385920).

Almost surely, 2^2153643471 is an apocalyptic number.

2153643471 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2153643471 is a deficient number, since it is larger than the sum of its proper divisors (1541793329).

2153643471 is a wasteful number, since it uses less digits than its factorization.

2153643471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19305 (or 19296 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 2153643471 is about 46407.3644048011. The cubic root of 2153643471 is about 1291.3915378731.

The spelling of 2153643471 in words is "two billion, one hundred fifty-three million, six hundred forty-three thousand, four hundred seventy-one".