855738045 has 24 divisors (see below), whose sum is σ = 1484574936. Its totient is φ = 455995008.

The previous prime is 855738041. The next prime is 855738067. The reversal of 855738045 is 540837558.

It can be written as a sum of positive squares in 4 ways, for example, as 13461561 + 842276484 = 3669^2 + 29022^2 .

It is not a de Polignac number, because 855738045 - 2² = 855738041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855738041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47979 + ... + 63351.

It is an arithmetic number, because the mean of its divisors is an integer number (61857289).

Almost surely, 2^855738045 is an apocalyptic number.

It is an amenable number.

855738045 is a deficient number, since it is larger than the sum of its proper divisors (628836891).

855738045 is a wasteful number, since it uses less digits than its factorization.

855738045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16621 (or 16618 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The square root of 855738045 is about 29253.0006153215. Note that the first 3 decimals coincide. The cubic root of 855738045 is about 949.3950146263.

The spelling of 855738045 in words is "eight hundred fifty-five million, seven hundred thirty-eight thousand, forty-five".