1010305645 has 4 divisors (see below), whose sum is σ = 1212366780. Its totient is φ = 808244512.

The previous prime is 1010305603. The next prime is 1010305649. The reversal of 1010305645 is 5465030101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 229159044 + 781146601 = 15138^2 + 27949^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010305645 - 2¹⁵ = 1010272877 is a prime.

It is a super-3 number, since 3×1010305645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010305649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101030560 + ... + 101030569.

It is an arithmetic number, because the mean of its divisors is an integer number (303091695).

Almost surely, 2^1010305645 is an apocalyptic number.

It is an amenable number.

1010305645 is a deficient number, since it is larger than the sum of its proper divisors (202061135).

1010305645 is an equidigital number, since it uses as much as digits as its factorization.

1010305645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202061134.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1010305645 is about 31785.3054885430. The cubic root of 1010305645 is about 1003.4234814004.

Adding to 1010305645 its reverse (5465030101), we get a palindrome (6475335746).

The spelling of 1010305645 in words is "one billion, ten million, three hundred five thousand, six hundred forty-five".