1012045541 has 4 divisors (see below), whose sum is σ = 1089895212. Its totient is φ = 934195872.

The previous prime is 1012045511. The next prime is 1012045543. The reversal of 1012045541 is 1455402101.

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 350064100 + 661981441 = 18710^2 + 25729^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012045541 - 2²⁶ = 944936677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012045543) 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, 38924816 + ... + 38924841.

It is an arithmetic number, because the mean of its divisors is an integer number (272473803).

Almost surely, 2^1012045541 is an apocalyptic number.

It is an amenable number.

1012045541 is a deficient number, since it is larger than the sum of its proper divisors (77849671).

1012045541 is an equidigital number, since it uses as much as digits as its factorization.

1012045541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77849670.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1012045541 is about 31812.6632176560. The cubic root of 1012045541 is about 1003.9991656872. Note that the first 3 decimals are identical.

Adding to 1012045541 its reverse (1455402101), we get a palindrome (2467447642).

The spelling of 1012045541 in words is "one billion, twelve million, forty-five thousand, five hundred forty-one".