1126653940 has 12 divisors (see below), whose sum is σ = 2365973316. Its totient is φ = 450661568.

The previous prime is 1126653917. The next prime is 1126653943. The reversal of 1126653940 is 493566211.

It can be written as a sum of positive squares in 2 ways, for example, as 492218596 + 634435344 = 22186^2 + 25188^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1126653940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126653943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28166329 + ... + 28166368.

It is an arithmetic number, because the mean of its divisors is an integer number (197164443).

Almost surely, 2^1126653940 is an apocalyptic number.

1126653940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1126653940 is an abundant number, since it is smaller than the sum of its proper divisors (1239319376).

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

1126653940 is a wasteful number, since it uses less digits than its factorization.

1126653940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56332706 (or 56332704 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1126653940 is about 33565.6660890261. Note that the first 3 decimals coincide. The cubic root of 1126653940 is about 1040.5513410455.

The spelling of 1126653940 in words is "one billion, one hundred twenty-six million, six hundred fifty-three thousand, nine hundred forty".