1208965920 has 96 divisors (see below), whose sum is σ = 3939606720. Its totient is φ = 311270400.

The previous prime is 1208965903. The next prime is 1208965969. The reversal of 1208965920 is 295698021.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29506 + ... + 57345.

It is an arithmetic number, because the mean of its divisors is an integer number (41037570).

Almost surely, 2^1208965920 is an apocalyptic number.

1208965920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1208965920 is an abundant number, since it is smaller than the sum of its proper divisors (2730640800).

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

1208965920 is a wasteful number, since it uses less digits than its factorization.

1208965920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86898 (or 86890 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1208965920 is about 34770.1872298669. The cubic root of 1208965920 is about 1065.2985915837.

The spelling of 1208965920 in words is "one billion, two hundred eight million, nine hundred sixty-five thousand, nine hundred twenty".