1147387664 has 40 divisors (see below), whose sum is σ = 2356244280. Its totient is φ = 539394048.

The previous prime is 1147387651. The next prime is 1147387693. The reversal of 1147387664 is 4667837411.

It can be written as a sum of positive squares in 4 ways, for example, as 123387664 + 1024000000 = 11108^2 + 32000^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403592 + ... + 406424.

It is an arithmetic number, because the mean of its divisors is an integer number (58906107).

Almost surely, 2^1147387664 is an apocalyptic number.

It is an amenable number.

1147387664 is an abundant number, since it is smaller than the sum of its proper divisors (1208856616).

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

1147387664 is a wasteful number, since it uses less digits than its factorization.

1147387664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347 (or 4341 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 1147387664 is about 33873.1112240963. Note that the first 3 decimals coincide. The cubic root of 1147387664 is about 1046.8956424046.

The spelling of 1147387664 in words is "one billion, one hundred forty-seven million, three hundred eighty-seven thousand, six hundred sixty-four".