1211893848 has 72 divisors (see below), whose sum is σ = 3583492380. Its totient is φ = 366943680.

The previous prime is 1211893799. The next prime is 1211893871. The reversal of 1211893848 is 8483981121.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 979086 + ... + 980322.

Almost surely, 2^1211893848 is an apocalyptic number.

1211893848 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 1211893848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791746190).

1211893848 is an abundant number, since it is smaller than the sum of its proper divisors (2371598532).

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

1211893848 is a wasteful number, since it uses less digits than its factorization.

1211893848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497 (or 1253 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 1211893848 is about 34812.2657694095. The cubic root of 1211893848 is about 1066.1578942597.

The spelling of 1211893848 in words is "one billion, two hundred eleven million, eight hundred ninety-three thousand, eight hundred forty-eight".