1263120936 has 96 divisors (see below), whose sum is σ = 3966889920. Its totient is φ = 328078080.

The previous prime is 1263120919. The next prime is 1263120941. The reversal of 1263120936 is 6390213621.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1263120897 and 1263120906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10741 + ... + 51396.

It is an arithmetic number, because the mean of its divisors is an integer number (41321770).

Almost surely, 2^1263120936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263120936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1983444960).

1263120936 is an abundant number, since it is smaller than the sum of its proper divisors (2703768984).

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

1263120936 is a wasteful number, since it uses less digits than its factorization.

1263120936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62175 (or 62160 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 1263120936 is about 35540.4127156678. The cubic root of 1263120936 is about 1080.9733269359.

The spelling of 1263120936 in words is "one billion, two hundred sixty-three million, one hundred twenty thousand, nine hundred thirty-six".