1238817132 has 192 divisors, whose sum is σ = 3982970880. Its totient is φ = 324864000.

The previous prime is 1238817109. The next prime is 1238817163. The reversal of 1238817132 is 2317188321.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 525757 + ... + 528107.

It is an arithmetic number, because the mean of its divisors is an integer number (20744640).

Almost surely, 2^1238817132 is an apocalyptic number.

1238817132 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 1238817132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1991485440).

1238817132 is an abundant number, since it is smaller than the sum of its proper divisors (2744153748).

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

1238817132 is a wasteful number, since it uses less digits than its factorization.

1238817132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2421 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 1238817132 is about 35196.8341189943. The cubic root of 1238817132 is about 1073.9953496881.

The spelling of 1238817132 in words is "one billion, two hundred thirty-eight million, eight hundred seventeen thousand, one hundred thirty-two".