2155482643 has 2 divisors, whose sum is σ = 2155482644. Its totient is φ = 2155482642.

The previous prime is 2155482617. The next prime is 2155482701. The reversal of 2155482643 is 3462845512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155482643 is a prime.

It is a super-2 number, since 2×2155482643² = 9292210848548530898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2155482596 and 2155482605.

It is not a weakly prime, because it can be changed into another prime (2155482143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077741321 + 1077741322.

It is an arithmetic number, because the mean of its divisors is an integer number (1077741322).

Almost surely, 2^2155482643 is an apocalyptic number.

2155482643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155482643 is an equidigital number, since it uses as much as digits as its factorization.

2155482643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 40.

The square root of 2155482643 is about 46427.1756948449. The cubic root of 2155482643 is about 1291.7590415036.

The spelling of 2155482643 in words is "two billion, one hundred fifty-five million, four hundred eighty-two thousand, six hundred forty-three".