1123351940 has 12 divisors (see below), whose sum is σ = 2359039116. Its totient is φ = 449340768.

The previous prime is 1123351937. The next prime is 1123351951. The reversal of 1123351940 is 491533211.

It can be written as a sum of positive squares in 2 ways, for example, as 766293124 + 357058816 = 27682^2 + 18896^2 .

It is a super-2 number, since 2×1123351940² = 2523839162203527200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28083779 + ... + 28083818.

It is an arithmetic number, because the mean of its divisors is an integer number (196586593).

Almost surely, 2^1123351940 is an apocalyptic number.

1123351940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123351940 is an abundant number, since it is smaller than the sum of its proper divisors (1235687176).

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

1123351940 is a wasteful number, since it uses less digits than its factorization.

1123351940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56167606 (or 56167604 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1123351940 is about 33516.4428303482. The cubic root of 1123351940 is about 1039.5337962222.

The spelling of 1123351940 in words is "one billion, one hundred twenty-three million, three hundred fifty-one thousand, nine hundred forty".