1213926912 has 240 divisors, whose sum is σ = 3967996032. Its totient is φ = 367441920.

The previous prime is 1213926911. The next prime is 1213926919. The reversal of 1213926912 is 2196293121.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213926911) 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, 1368133 + ... + 1369019.

Almost surely, 2^1213926912 is an apocalyptic number.

1213926912 is a gapful number since it is divisible by the number (12) 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 1213926912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1983998016).

1213926912 is an abundant number, since it is smaller than the sum of its proper divisors (2754069120).

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

1213926912 is an frugal number, since it uses more digits than its factorization.

1213926912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 903 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 1213926912 is about 34841.4539306269. The cubic root of 1213926912 is about 1066.7537540007.

The spelling of 1213926912 in words is "one billion, two hundred thirteen million, nine hundred twenty-six thousand, nine hundred twelve".