131819648 has 16 divisors (see below), whose sum is σ = 262609710. Its totient is φ = 65909760.

The previous prime is 131819627. The next prime is 131819651. The reversal of 131819648 is 846918131.

It can be written as a sum of positive squares in only one way, i.e., 106337344 + 25482304 = 10312^2 + 5048^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514793 + ... + 515048.

Almost surely, 2^131819648 is an apocalyptic number.

It is an amenable number.

131819648 is a deficient number, since it is larger than the sum of its proper divisors (130790062).

131819648 is an equidigital number, since it uses as much as digits as its factorization.

131819648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029855 (or 1029843 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 131819648 is about 11481.2737969269. The cubic root of 131819648 is about 508.9323403491.

The spelling of 131819648 in words is "one hundred thirty-one million, eight hundred nineteen thousand, six hundred forty-eight".