1011620545 has 32 divisors (see below), whose sum is σ = 1328108544. Its totient is φ = 735264000.

The previous prime is 1011620531. The next prime is 1011620579. The reversal of 1011620545 is 5450261101.

It is a happy number.

It is not a de Polignac number, because 1011620545 - 2¹⁵ = 1011587777 is a prime.

It is a super-2 number, since 2×1011620545² = 2046752254132194050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1463650 + ... + 1464340.

It is an arithmetic number, because the mean of its divisors is an integer number (41503392).

Almost surely, 2^1011620545 is an apocalyptic number.

It is an amenable number.

1011620545 is a deficient number, since it is larger than the sum of its proper divisors (316487999).

1011620545 is a wasteful number, since it uses less digits than its factorization.

1011620545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1011620545 is about 31805.9828491433. The cubic root of 1011620545 is about 1003.8586070019.

Adding to 1011620545 its reverse (5450261101), we get a palindrome (6461881646).

The spelling of 1011620545 in words is "one billion, eleven million, six hundred twenty thousand, five hundred forty-five".