1181485250 has 32 divisors (see below), whose sum is σ = 2412813312. Its totient is φ = 429630000.

The previous prime is 1181485247. The next prime is 1181485273. The reversal of 1181485250 is 525841811.

It is a self number, because there is not a number n which added to its sum of digits gives 1181485250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212066 + ... + 217565.

It is an arithmetic number, because the mean of its divisors is an integer number (75400416).

Almost surely, 2^1181485250 is an apocalyptic number.

1181485250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1181485250 is an abundant number, since it is smaller than the sum of its proper divisors (1231328062).

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

1181485250 is a wasteful number, since it uses less digits than its factorization.

1181485250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429659 (or 429649 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 1181485250 is about 34372.7399257028. The cubic root of 1181485250 is about 1057.1649798407.

The spelling of 1181485250 in words is "one billion, one hundred eighty-one million, four hundred eighty-five thousand, two hundred fifty".