881343643 has 2 divisors, whose sum is σ = 881343644. Its totient is φ = 881343642.

The previous prime is 881343637. The next prime is 881343653. The reversal of 881343643 is 346343188.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 881343643 - 2²¹ = 879246491 is a prime.

It is a super-2 number, since 2×881343643² = 1553533234113022898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 881343596 and 881343605.

It is not a weakly prime, because it can be changed into another prime (881343653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440671821 + 440671822.

It is an arithmetic number, because the mean of its divisors is an integer number (440671822).

Almost surely, 2^881343643 is an apocalyptic number.

881343643 is a deficient number, since it is larger than the sum of its proper divisors (1).

881343643 is an equidigital number, since it uses as much as digits as its factorization.

881343643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 40.

The square root of 881343643 is about 29687.4324083441. The cubic root of 881343643 is about 958.7714474650.

The spelling of 881343643 in words is "eight hundred eighty-one million, three hundred forty-three thousand, six hundred forty-three".