1143619840 has 72 divisors (see below), whose sum is σ = 2988393408. Its totient is φ = 415856640.

The previous prime is 1143619831. The next prime is 1143619889. The reversal of 1143619840 is 489163411.

It is a self number, because there is not a number n which added to its sum of digits gives 1143619840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26532 + ... + 54691.

It is an arithmetic number, because the mean of its divisors is an integer number (41505464).

Almost surely, 2^1143619840 is an apocalyptic number.

1143619840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143619840 is an abundant number, since it is smaller than the sum of its proper divisors (1844773568).

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

1143619840 is an equidigital number, since it uses as much as digits as its factorization.

1143619840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81255 (or 81241 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1143619840 is about 33817.4487506080. The cubic root of 1143619840 is about 1045.7484439316.

The spelling of 1143619840 in words is "one billion, one hundred forty-three million, six hundred nineteen thousand, eight hundred forty".