1147952988 has 216 divisors, whose sum is σ = 3675632688. Its totient is φ = 299400192.

The previous prime is 1147952969. The next prime is 1147952989. The reversal of 1147952988 is 8892597411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147952989) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2591095 + ... + 2591537.

It is an arithmetic number, because the mean of its divisors is an integer number (17016818).

Almost surely, 2^1147952988 is an apocalyptic number.

1147952988 is a gapful number since it is divisible by the number (18) 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 1147952988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1837816344).

1147952988 is an abundant number, since it is smaller than the sum of its proper divisors (2527679700).

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

1147952988 is a wasteful number, since it uses less digits than its factorization.

1147952988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 581 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 1147952988 is about 33881.4549274378. The cubic root of 1147952988 is about 1047.0675511898.

The spelling of 1147952988 in words is "one billion, one hundred forty-seven million, nine hundred fifty-two thousand, nine hundred eighty-eight".