1031640453 has 12 divisors (see below), whose sum is σ = 1510561260. Its totient is φ = 678338496.

The previous prime is 1031640443. The next prime is 1031640497. The reversal of 1031640453 is 3540461301.

1031640453 is a `hidden beast` number, since 10 + 3 + 1 + 640 + 4 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 594286884 + 437353569 = 24378^2 + 20913^2 .

It is not a de Polignac number, because 1031640453 - 2¹² = 1031636357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031640433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784458 + ... + 785771.

It is an arithmetic number, because the mean of its divisors is an integer number (125880105).

Almost surely, 2^1031640453 is an apocalyptic number.

It is an amenable number.

1031640453 is a deficient number, since it is larger than the sum of its proper divisors (478920807).

1031640453 is a wasteful number, since it uses less digits than its factorization.

1031640453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570308 (or 1570305 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1031640453 is about 32119.1602162946. The cubic root of 1031640453 is about 1010.4374972919.

The spelling of 1031640453 in words is "one billion, thirty-one million, six hundred forty thousand, four hundred fifty-three".