1011236045 has 16 divisors (see below), whose sum is σ = 1228834800. Its totient is φ = 798818304.

The previous prime is 1011236033. The next prime is 1011236047. The reversal of 1011236045 is 5406321101.

It can be written as a sum of positive squares in 8 ways, for example, as 191158276 + 820077769 = 13826^2 + 28637^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011236045 - 2¹⁴ = 1011219661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011236045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011236047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128381 + ... + 136029.

It is an arithmetic number, because the mean of its divisors is an integer number (76802175).

Almost surely, 2^1011236045 is an apocalyptic number.

It is an amenable number.

1011236045 is a deficient number, since it is larger than the sum of its proper divisors (217598755).

1011236045 is a wasteful number, since it uses less digits than its factorization.

1011236045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7984.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1011236045 is about 31799.9378144046. The cubic root of 1011236045 is about 1003.7314076126.

Adding to 1011236045 its reverse (5406321101), we get a palindrome (6417557146).

The spelling of 1011236045 in words is "one billion, eleven million, two hundred thirty-six thousand, forty-five".