1020894014449 has 9 divisors (see below), whose sum is σ = 1035145225569. Its totient is φ = 1006836416640.

The previous prime is 1020894014431. The next prime is 1020894014489. The reversal of 1020894014449 is 9444104980201.

The square root of 1020894014449 is 1010393.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 14547978225 + 1006346036224 = 120615^2 + 1003168^2 .

It is not a de Polignac number, because 1020894014449 - 2¹³ = 1020894006257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020894014399 and 1020894014408.

It is not an unprimeable number, because it can be changed into a prime (1020894014489) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 73751769 + ... + 73765609.

Almost surely, 2^{1020894014449} is an apocalyptic number.

1020894014449 is the 1010393-rd square number.

1020894014449 is the 505197-th centered octagonal number.

It is an amenable number.

1020894014449 is a deficient number, since it is larger than the sum of its proper divisors (14251211120).

1020894014449 is an frugal number, since it uses more digits than its factorization.

1020894014449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27828 (or 13914 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 1020894014449 in words is "one trillion, twenty billion, eight hundred ninety-four million, fourteen thousand, four hundred forty-nine".