1129450623 has 32 divisors (see below), whose sum is σ = 1735888896. Its totient is φ = 639871488.

The previous prime is 1129450613. The next prime is 1129450633. The reversal of 1129450623 is 3260549211.

It is an interprime number because it is at equal distance from previous prime (1129450613) and next prime (1129450633).

It is not a de Polignac number, because 1129450623 - 2⁹ = 1129450111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129450613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2027461 + ... + 2028017.

It is an arithmetic number, because the mean of its divisors is an integer number (54246528).

Almost surely, 2^1129450623 is an apocalyptic number.

1129450623 is a deficient number, since it is larger than the sum of its proper divisors (606438273).

1129450623 is a wasteful number, since it uses less digits than its factorization.

1129450623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1129450623 is about 33607.3001444627. The cubic root of 1129450623 is about 1041.4116133851.

Adding to 1129450623 its reverse (3260549211), we get a palindrome (4389999834).

The spelling of 1129450623 in words is "one billion, one hundred twenty-nine million, four hundred fifty thousand, six hundred twenty-three".