1243788748 has 24 divisors (see below), whose sum is σ = 2305960272. Its totient is φ = 584984064.

The previous prime is 1243788691. The next prime is 1243788787. The reversal of 1243788748 is 8478873421.

It is a junction number, because it is equal to n+sod(n) for n = 1243788695 and 1243788704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152215 + ... + 160177.

It is an arithmetic number, because the mean of its divisors is an integer number (96081678).

Almost surely, 2^1243788748 is an apocalyptic number.

It is an amenable number.

1243788748 is a deficient number, since it is larger than the sum of its proper divisors (1062171524).

1243788748 is a wasteful number, since it uses less digits than its factorization.

1243788748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10281 (or 10279 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 52.

The square root of 1243788748 is about 35267.3892994647. The cubic root of 1243788748 is about 1075.4301499771.

The spelling of 1243788748 in words is "one billion, two hundred forty-three million, seven hundred eighty-eight thousand, seven hundred forty-eight".