1045521973 has 2 divisors, whose sum is σ = 1045521974. Its totient is φ = 1045521972.

The previous prime is 1045521941. The next prime is 1045522021. The reversal of 1045521973 is 3791255401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715990564 + 329531409 = 26758^2 + 18153^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045521973 - 2⁵ = 1045521941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045521773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522760986 + 522760987.

It is an arithmetic number, because the mean of its divisors is an integer number (522760987).

Almost surely, 2^1045521973 is an apocalyptic number.

It is an amenable number.

1045521973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045521973 is an equidigital number, since it uses as much as digits as its factorization.

1045521973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1045521973 is about 32334.5322062961. The cubic root of 1045521973 is about 1014.9493929972.

The spelling of 1045521973 in words is "one billion, forty-five million, five hundred twenty-one thousand, nine hundred seventy-three".