1331144650 has 96 divisors (see below), whose sum is σ = 2819390976. Its totient is φ = 463200000.

The previous prime is 1331144641. The next prime is 1331144651. The reversal of 1331144650 is 564411331.

It is not an unprimeable number, because it can be changed into a prime (1331144651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1721664 + ... + 1722436.

It is an arithmetic number, because the mean of its divisors is an integer number (29368656).

Almost surely, 2^1331144650 is an apocalyptic number.

1331144650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331144650 is an abundant number, since it is smaller than the sum of its proper divisors (1488246326).

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

1331144650 is a wasteful number, since it uses less digits than its factorization.

1331144650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1331144650 is about 36484.8550771413. The cubic root of 1331144650 is about 1100.0398470414.

Adding to 1331144650 its reverse (564411331), we get a palindrome (1895555981).

The spelling of 1331144650 in words is "one billion, three hundred thirty-one million, one hundred forty-four thousand, six hundred fifty".