1853116155 has 48 divisors (see below), whose sum is σ = 3589578720. Its totient is φ = 876556800.

The previous prime is 1853116123. The next prime is 1853116231. The reversal of 1853116155 is 5516113581.

It is a happy number.

1853116155 is a `hidden beast` number, since 1 + 8 + 5 + 31 + 1 + 615 + 5 = 666.

It is not a de Polignac number, because 1853116155 - 2⁵ = 1853116123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25360 + ... + 65949.

It is an arithmetic number, because the mean of its divisors is an integer number (74782890).

Almost surely, 2^1853116155 is an apocalyptic number.

1853116155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1853116155 is a deficient number, since it is larger than the sum of its proper divisors (1736462565).

1853116155 is a wasteful number, since it uses less digits than its factorization.

1853116155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91372 (or 91369 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 1853116155 is about 43047.8356598796. The cubic root of 1853116155 is about 1228.2898999293.

The spelling of 1853116155 in words is "one billion, eight hundred fifty-three million, one hundred sixteen thousand, one hundred fifty-five".