1123640652 has 24 divisors (see below), whose sum is σ = 2660961856. Its totient is φ = 368956368.

The previous prime is 1123640627. The next prime is 1123640657. The reversal of 1123640652 is 2560463211.

It is not an unprimeable number, because it can be changed into a prime (1123640657) 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, 697978 + ... + 699585.

Almost surely, 2^1123640652 is an apocalyptic number.

1123640652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123640652 is an abundant number, since it is smaller than the sum of its proper divisors (1537321204).

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

1123640652 is a wasteful number, since it uses less digits than its factorization.

1123640652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397637 (or 1397635 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1123640652 is about 33520.7495739579. The cubic root of 1123640652 is about 1039.6228452438.

The spelling of 1123640652 in words is "one billion, one hundred twenty-three million, six hundred forty thousand, six hundred fifty-two".