1045665450 has 144 divisors (see below), whose sum is σ = 2949186240. Its totient is φ = 275425920.

The previous prime is 1045665431. The next prime is 1045665479. The reversal of 1045665450 is 545665401.

1045665450 is a `hidden beast` number, since 10 + 45 + 66 + 545 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1080867 + ... + 1081833.

It is an arithmetic number, because the mean of its divisors is an integer number (20480460).

Almost surely, 2^1045665450 is an apocalyptic number.

1045665450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1045665450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474593120).

1045665450 is an abundant number, since it is smaller than the sum of its proper divisors (1903520790).

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

1045665450 is an equidigital number, since it uses as much as digits as its factorization.

1045665450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083 (or 1066 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 1045665450 is about 32336.7507644166. The cubic root of 1045665450 is about 1014.9958180484.

The spelling of 1045665450 in words is "one billion, forty-five million, six hundred sixty-five thousand, four hundred fifty".