1213763040 has 144 divisors (see below), whose sum is σ = 4733715168. Its totient is φ = 277429248.

The previous prime is 1213763009. The next prime is 1213763041. The reversal of 1213763040 is 403673121.

1213763040 is a `hidden beast` number, since 1 + 21 + 3 + 7 + 630 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 1213762995 and 1213763013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213763041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50127 + ... + 70286.

It is an arithmetic number, because the mean of its divisors is an integer number (32873022).

Almost surely, 2^1213763040 is an apocalyptic number.

1213763040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213763040 is an abundant number, since it is smaller than the sum of its proper divisors (3519952128).

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

1213763040 is a wasteful number, since it uses less digits than its factorization.

1213763040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120441 (or 120430 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1213763040 is about 34839.1021698321. The cubic root of 1213763040 is about 1066.7057503040.

The spelling of 1213763040 in words is "one billion, two hundred thirteen million, seven hundred sixty-three thousand, forty".