1243806948 has 96 divisors (see below), whose sum is σ = 3343939200. Its totient is φ = 399489408.

The previous prime is 1243806943. The next prime is 1243806979. The reversal of 1243806948 is 8496083421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1243806943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426118 + ... + 429026.

It is an arithmetic number, because the mean of its divisors is an integer number (34832700).

Almost surely, 2^1243806948 is an apocalyptic number.

1243806948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243806948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1671969600).

1243806948 is an abundant number, since it is smaller than the sum of its proper divisors (2100132252).

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

1243806948 is a wasteful number, since it uses less digits than its factorization.

1243806948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066 (or 3058 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 1243806948 is about 35267.6473272601. The cubic root of 1243806948 is about 1075.4353954373.

It can be divided in two parts, 124380 and 6948, that added together give a triangular number (131328 = T₅₁₂).

The spelling of 1243806948 in words is "one billion, two hundred forty-three million, eight hundred six thousand, nine hundred forty-eight".