1031553664 has 32 divisors (see below), whose sum is σ = 2125919700. Its totient is φ = 497989632.

The previous prime is 1031553559. The next prime is 1031553667. The reversal of 1031553664 is 4663551301.

It can be written as a sum of positive squares in 2 ways, for example, as 1023488064 + 8065600 = 31992^2 + 2840^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1031553667) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 135237 + ... + 142660.

Almost surely, 2^1031553664 is an apocalyptic number.

It is an amenable number.

1031553664 is an abundant number, since it is smaller than the sum of its proper divisors (1094366036).

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

1031553664 is an equidigital number, since it uses as much as digits as its factorization.

1031553664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277940 (or 277928 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 1031553664 is about 32117.8091407244. The cubic root of 1031553664 is about 1010.4091614123.

The spelling of 1031553664 in words is "one billion, thirty-one million, five hundred fifty-three thousand, six hundred sixty-four".