1125989623 has 8 divisors (see below), whose sum is σ = 1229711616. Its totient is φ = 1022494200.

The previous prime is 1125989621. The next prime is 1125989653. The reversal of 1125989623 is 3269895211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125989623 - 2¹ = 1125989621 is a prime.

It is a super-2 number, since 2×1125989623² = 2535705262207364258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125989621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46161 + ... + 66202.

It is an arithmetic number, because the mean of its divisors is an integer number (153713952).

Almost surely, 2^1125989623 is an apocalyptic number.

1125989623 is a deficient number, since it is larger than the sum of its proper divisors (103721993).

1125989623 is a wasteful number, since it uses less digits than its factorization.

1125989623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113285.

The product of its digits is 233280, while the sum is 46.

The square root of 1125989623 is about 33555.7688482919. The cubic root of 1125989623 is about 1040.3467849321.

It can be divided in two parts, 112598 and 9623, that added together give a palindrome (122221).

The spelling of 1125989623 in words is "one billion, one hundred twenty-five million, nine hundred eighty-nine thousand, six hundred twenty-three".