1147658238 has 48 divisors (see below), whose sum is σ = 2579569200. Its totient is φ = 368323200.

The previous prime is 1147658227. The next prime is 1147658257. The reversal of 1147658238 is 8328567411.

It is a junction number, because it is equal to n+sod(n) for n = 1147658193 and 1147658202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194938 + ... + 200738.

It is an arithmetic number, because the mean of its divisors is an integer number (53741025).

Almost surely, 2^1147658238 is an apocalyptic number.

1147658238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1147658238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289784600).

1147658238 is an abundant number, since it is smaller than the sum of its proper divisors (1431910962).

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

1147658238 is a wasteful number, since it uses less digits than its factorization.

1147658238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217 (or 6214 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 1147658238 is about 33877.1049235321. The cubic root of 1147658238 is about 1046.9779280137.

The spelling of 1147658238 in words is "one billion, one hundred forty-seven million, six hundred fifty-eight thousand, two hundred thirty-eight".