1181780484 has 24 divisors (see below), whose sum is σ = 2767746240. Its totient is φ = 392461344.

The previous prime is 1181780459. The next prime is 1181780489. The reversal of 1181780484 is 4840871811.

It is a super-2 number, since 2×1181780484² = 2793210224726548512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1181780489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179824 + ... + 186279.

It is an arithmetic number, because the mean of its divisors is an integer number (115322760).

Almost surely, 2^1181780484 is an apocalyptic number.

It is an amenable number.

1181780484 is an abundant number, since it is smaller than the sum of its proper divisors (1585965756).

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

1181780484 is a wasteful number, since it uses less digits than its factorization.

1181780484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366379 (or 366377 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 42.

The square root of 1181780484 is about 34377.0342525355. The cubic root of 1181780484 is about 1057.2530286341.

The spelling of 1181780484 in words is "one billion, one hundred eighty-one million, seven hundred eighty thousand, four hundred eighty-four".