1173405940 has 36 divisors (see below), whose sum is σ = 2866465476. Its totient is φ = 402310272.

The previous prime is 1173405913. The next prime is 1173405949. The reversal of 1173405940 is 495043711.

It can be written as a sum of positive squares in 2 ways, for example, as 892575376 + 280830564 = 29876^2 + 16758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1173405896 and 1173405905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173405949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 597697 + ... + 599656.

It is an arithmetic number, because the mean of its divisors is an integer number (79624041).

Almost surely, 2^1173405940 is an apocalyptic number.

1173405940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1173405940 is an abundant number, since it is smaller than the sum of its proper divisors (1693059536).

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

1173405940 is a wasteful number, since it uses less digits than its factorization.

1173405940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197376 (or 1197367 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1173405940 is about 34255.0133557119. The cubic root of 1173405940 is about 1054.7497411089.

The spelling of 1173405940 in words is "one billion, one hundred seventy-three million, four hundred five thousand, nine hundred forty".