1208545920 has 384 divisors, whose sum is σ = 4566744000. Its totient is φ = 304570368.

The previous prime is 1208545853. The next prime is 1208545931. The reversal of 1208545920 is 295458021.

1208545920 is a `hidden beast` number, since 1 + 20 + 8 + 545 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2954676 + ... + 2955084.

Almost surely, 2^1208545920 is an apocalyptic number.

1208545920 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 1208545920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2283372000).

1208545920 is an abundant number, since it is smaller than the sum of its proper divisors (3358198080).

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

1208545920 is an equidigital number, since it uses as much as digits as its factorization.

1208545920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1208545920 is about 34764.1470483600. The cubic root of 1208545920 is about 1065.1752141795.

The spelling of 1208545920 in words is "one billion, two hundred eight million, five hundred forty-five thousand, nine hundred twenty".