1850349481155 has 80 divisors (see below), whose sum is σ = 3791126744064. Its totient is φ = 845794198080.

The previous prime is 1850349481153. The next prime is 1850349481177. The reversal of 1850349481155 is 5511849430581.

1850349481155 is a `hidden beast` number, since 1 + 8 + 5 + 0 + 3 + 4 + 9 + 481 + 155 = 666.

It is not a de Polignac number, because 1850349481155 - 2¹ = 1850349481153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1850349481153) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 38506474 + ... + 38554496.

Almost surely, 2^{1850349481155} is an apocalyptic number.

1850349481155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1850349481155 is an abundant number, since it is smaller than the sum of its proper divisors (1940777262909).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1850349481155 is a wasteful number, since it uses less digits than its factorization.

1850349481155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61638 (or 61629 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 1850349481155 in words is "one trillion, eight hundred fifty billion, three hundred forty-nine million, four hundred eighty-one thousand, one hundred fifty-five".