1208821834 has 8 divisors (see below), whose sum is σ = 1978072128. Its totient is φ = 549464460.

The previous prime is 1208821813. The next prime is 1208821841. The reversal of 1208821834 is 4381288021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1208821834² = 2922500452710247112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1208821793 and 1208821802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27473202 + ... + 27473245.

It is an arithmetic number, because the mean of its divisors is an integer number (247259016).

Almost surely, 2^1208821834 is an apocalyptic number.

1208821834 is a deficient number, since it is larger than the sum of its proper divisors (769250294).

1208821834 is a wasteful number, since it uses less digits than its factorization.

1208821834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54946460.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 1208821834 is about 34768.1151919399. The cubic root of 1208821834 is about 1065.2562687168.

The spelling of 1208821834 in words is "one billion, two hundred eight million, eight hundred twenty-one thousand, eight hundred thirty-four".