1153918720 has 36 divisors (see below), whose sum is σ = 2763999000. Its totient is φ = 461566976.

The previous prime is 1153918691. The next prime is 1153918739. The reversal of 1153918720 is 278193511.

It is a self number, because there is not a number n which added to its sum of digits gives 1153918720.

It is a congruent number.

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, 449470 + ... + 452029.

It is an arithmetic number, because the mean of its divisors is an integer number (76777750).

Almost surely, 2^1153918720 is an apocalyptic number.

1153918720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153918720 is an abundant number, since it is smaller than the sum of its proper divisors (1610080280).

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

1153918720 is an frugal number, since it uses more digits than its factorization.

1153918720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901520 (or 901506 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1153918720 is about 33969.3791524072. The cubic root of 1153918720 is about 1048.8782335837.

The spelling of 1153918720 in words is "one billion, one hundred fifty-three million, nine hundred eighteen thousand, seven hundred twenty".