1155499984 has 10 divisors (see below), whose sum is σ = 2238781250. Its totient is φ = 577749984.

The previous prime is 1155499931. The next prime is 1155499997. The reversal of 1155499984 is 4899945511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 996033600 + 159466384 = 31560^2 + 12628^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36109359 + ... + 36109390.

It is an arithmetic number, because the mean of its divisors is an integer number (223878125).

Almost surely, 2^1155499984 is an apocalyptic number.

It is an amenable number.

1155499984 is a deficient number, since it is larger than the sum of its proper divisors (1083281266).

1155499984 is an equidigital number, since it uses as much as digits as its factorization.

1155499984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72218757 (or 72218751 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 55.

The square root of 1155499984 is about 33992.6460282220. The cubic root of 1155499984 is about 1049.3571224179.

The spelling of 1155499984 in words is "one billion, one hundred fifty-five million, four hundred ninety-nine thousand, nine hundred eighty-four".