1155139484 has 48 divisors (see below), whose sum is σ = 2175129600. Its totient is φ = 535550400.

The previous prime is 1155139481. The next prime is 1155139499. The reversal of 1155139484 is 4849315511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155139481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498689 + ... + 500999.

It is an arithmetic number, because the mean of its divisors is an integer number (45315200).

Almost surely, 2^1155139484 is an apocalyptic number.

It is an amenable number.

1155139484 is a deficient number, since it is larger than the sum of its proper divisors (1019990116).

1155139484 is a wasteful number, since it uses less digits than its factorization.

1155139484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514 (or 2512 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 1155139484 is about 33987.3429970629. The cubic root of 1155139484 is about 1049.2479827683.

The spelling of 1155139484 in words is "one billion, one hundred fifty-five million, one hundred thirty-nine thousand, four hundred eighty-four".