1140438550 has 48 divisors (see below), whose sum is σ = 2181556800. Its totient is φ = 443336960.

The previous prime is 1140438547. The next prime is 1140438569. The reversal of 1140438550 is 558340411.

It is a super-2 number, since 2×1140438550² = 2601200172652205000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 348522 + ... + 351778.

It is an arithmetic number, because the mean of its divisors is an integer number (45449100).

Almost surely, 2^1140438550 is an apocalyptic number.

1140438550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1140438550 is a deficient number, since it is larger than the sum of its proper divisors (1041118250).

1140438550 is a wasteful number, since it uses less digits than its factorization.

1140438550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1140438550 is about 33770.3797728127. The cubic root of 1140438550 is about 1044.7778653780. Note that the first 3 decimals are identical.

Adding to 1140438550 its reverse (558340411), we get a palindrome (1698778961).

The spelling of 1140438550 in words is "one billion, one hundred forty million, four hundred thirty-eight thousand, five hundred fifty".