1236162144 has 192 divisors, whose sum is σ = 3809562624. Its totient is φ = 343719936.

The previous prime is 1236162139. The next prime is 1236162227. The reversal of 1236162144 is 4412616321.

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 31 ways as a sum of consecutive naturals, for example, 5543217 + ... + 5543439.

It is an arithmetic number, because the mean of its divisors is an integer number (19841472).

Almost surely, 2^1236162144 is an apocalyptic number.

1236162144 is a gapful number since it is divisible by the number (14) 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 1236162144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1904781312).

1236162144 is an abundant number, since it is smaller than the sum of its proper divisors (2573400480).

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

1236162144 is a wasteful number, since it uses less digits than its factorization.

1236162144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 421 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 1236162144 is about 35159.0975993412. The cubic root of 1236162144 is about 1073.2275516119.

Adding to 1236162144 its reverse (4412616321), we get a palindrome (5648778465).

The spelling of 1236162144 in words is "one billion, two hundred thirty-six million, one hundred sixty-two thousand, one hundred forty-four".