1082816638 has 4 divisors (see below), whose sum is σ = 1624224960. Its totient is φ = 541408318.

The previous prime is 1082816633. The next prime is 1082816641. The reversal of 1082816638 is 8366182801.

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

It is a junction number, because it is equal to n+sod(n) for n = 1082816594 and 1082816603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1082816633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270704158 + ... + 270704161.

It is an arithmetic number, because the mean of its divisors is an integer number (406056240).

Almost surely, 2^1082816638 is an apocalyptic number.

1082816638 is a deficient number, since it is larger than the sum of its proper divisors (541408322).

1082816638 is an equidigital number, since it uses as much as digits as its factorization.

1082816638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541408321.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1082816638 is about 32906.1793285091. The cubic root of 1082816638 is about 1026.8767165703.

The spelling of 1082816638 in words is "one billion, eighty-two million, eight hundred sixteen thousand, six hundred thirty-eight".