855148645 has 16 divisors (see below), whose sum is σ = 1120259952. Its totient is φ = 622840320.

The previous prime is 855148639. The next prime is 855148667. The reversal of 855148645 is 546841558.

It can be written as a sum of positive squares in 8 ways, for example, as 53012961 + 802135684 = 7281^2 + 28322^2 .

It is not a de Polignac number, because 855148645 - 2²⁹ = 318277733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855148595 and 855148604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85366 + ... + 94855.

It is an arithmetic number, because the mean of its divisors is an integer number (70016247).

Almost surely, 2^855148645 is an apocalyptic number.

It is an amenable number.

855148645 is a deficient number, since it is larger than the sum of its proper divisors (265111307).

855148645 is a wasteful number, since it uses less digits than its factorization.

855148645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180312.

The product of its digits is 768000, while the sum is 46.

The square root of 855148645 is about 29242.9246998312. The cubic root of 855148645 is about 949.1769954380.

The spelling of 855148645 in words is "eight hundred fifty-five million, one hundred forty-eight thousand, six hundred forty-five".