1238118144 has 36 divisors (see below), whose sum is σ = 3295201896. Its totient is φ = 412705792.

The previous prime is 1238118139. The next prime is 1238118149. The reversal of 1238118144 is 4418118321.

It is an interprime number because it is at equal distance from previous prime (1238118139) and next prime (1238118149).

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 (1238118149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805299 + ... + 806834.

It is an arithmetic number, because the mean of its divisors is an integer number (91533386).

Almost surely, 2^1238118144 is an apocalyptic number.

It is an amenable number.

1238118144 is an abundant number, since it is smaller than the sum of its proper divisors (2057083752).

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

1238118144 is an equidigital number, since it uses as much as digits as its factorization.

1238118144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612152 (or 1612138 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 1238118144 is about 35186.9030180265. The cubic root of 1238118144 is about 1073.7933152690.

The spelling of 1238118144 in words is "one billion, two hundred thirty-eight million, one hundred eighteen thousand, one hundred forty-four".