1040645532 has 24 divisors (see below), whose sum is σ = 2429679616. Its totient is φ = 346666608.

The previous prime is 1040645503. The next prime is 1040645533. The reversal of 1040645532 is 2355460401.

It is a self number, because there is not a number n which added to its sum of digits gives 1040645532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040645533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6118 + ... + 46029.

Almost surely, 2^1040645532 is an apocalyptic number.

1040645532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1040645532 is an abundant number, since it is smaller than the sum of its proper divisors (1389034084).

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

1040645532 is a wasteful number, since it uses less digits than its factorization.

1040645532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53817 (or 53815 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1040645532 is about 32259.0379893759. The cubic root of 1040645532 is about 1013.3689844432.

The spelling of 1040645532 in words is "one billion, forty million, six hundred forty-five thousand, five hundred thirty-two".