1208671620 has 192 divisors, whose sum is σ = 3850882560. Its totient is φ = 281014272.

The previous prime is 1208671603. The next prime is 1208671687. The reversal of 1208671620 is 261768021.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1596282 + ... + 1597038.

It is an arithmetic number, because the mean of its divisors is an integer number (20056680).

Almost surely, 2^1208671620 is an apocalyptic number.

1208671620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1208671620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1925441280).

1208671620 is an abundant number, since it is smaller than the sum of its proper divisors (2642210940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1208671620 is a wasteful number, since it uses less digits than its factorization.

1208671620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1208671620 is about 34765.9548984348. The cubic root of 1208671620 is about 1065.2121422709.

The spelling of 1208671620 in words is "one billion, two hundred eight million, six hundred seventy-one thousand, six hundred twenty".