1147481730 has 96 divisors (see below), whose sum is σ = 3122271360. Its totient is φ = 291836160.

The previous prime is 1147481729. The next prime is 1147481749. The reversal of 1147481730 is 371847411.

1147481730 is a `hidden beast` number, since 1 + 147 + 481 + 7 + 30 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1015806 + ... + 1016934.

It is an arithmetic number, because the mean of its divisors is an integer number (32523660).

Almost surely, 2^1147481730 is an apocalyptic number.

1147481730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1147481730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1561135680).

1147481730 is an abundant number, since it is smaller than the sum of its proper divisors (1974789630).

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

1147481730 is a wasteful number, since it uses less digits than its factorization.

1147481730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1653 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1147481730 is about 33874.4997011026. The cubic root of 1147481730 is about 1046.9242507519.

The spelling of 1147481730 in words is "one billion, one hundred forty-seven million, four hundred eighty-one thousand, seven hundred thirty".