1163956550 has 12 divisors (see below), whose sum is σ = 2164959276. Its totient is φ = 465582600.

The previous prime is 1163956517. The next prime is 1163956553. The reversal of 1163956550 is 556593611.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1163956498 and 1163956507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163956553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11639516 + ... + 11639615.

It is an arithmetic number, because the mean of its divisors is an integer number (180413273).

Almost surely, 2^1163956550 is an apocalyptic number.

1163956550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1163956550 is a deficient number, since it is larger than the sum of its proper divisors (1001002726).

1163956550 is a wasteful number, since it uses less digits than its factorization.

1163956550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23279143 (or 23279138 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 1163956550 is about 34116.8074414943. The cubic root of 1163956550 is about 1051.9108213523.

The spelling of 1163956550 in words is "one billion, one hundred sixty-three million, nine hundred fifty-six thousand, five hundred fifty".