1020511045 has 16 divisors (see below), whose sum is σ = 1270760832. Its totient is φ = 786179520.

The previous prime is 1020511013. The next prime is 1020511061. The reversal of 1020511045 is 5401150201.

It is not a de Polignac number, because 1020511045 - 2⁵ = 1020511013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18162 + ... + 48691.

It is an arithmetic number, because the mean of its divisors is an integer number (79422552).

Almost surely, 2^1020511045 is an apocalyptic number.

It is an amenable number.

1020511045 is a deficient number, since it is larger than the sum of its proper divisors (250249787).

1020511045 is an equidigital number, since it uses as much as digits as its factorization.

1020511045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66972.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1020511045 is about 31945.4385632754. The cubic root of 1020511045 is about 1006.7907957080.

Adding to 1020511045 its reverse (5401150201), we get a palindrome (6421661246).

The spelling of 1020511045 in words is "one billion, twenty million, five hundred eleven thousand, forty-five".