1855341672 has 16 divisors (see below), whose sum is σ = 4638354240. Its totient is φ = 618447216.

The previous prime is 1855341643. The next prime is 1855341679. The reversal of 1855341672 is 2761435581.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1855341679) 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, 38652928 + ... + 38652975.

It is an arithmetic number, because the mean of its divisors is an integer number (289897140).

Almost surely, 2^1855341672 is an apocalyptic number.

1855341672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1855341672 is an abundant number, since it is smaller than the sum of its proper divisors (2783012568).

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

1855341672 is a wasteful number, since it uses less digits than its factorization.

1855341672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77305912 (or 77305908 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 1855341672 is about 43073.6772518902. The cubic root of 1855341672 is about 1228.7814119282.

The spelling of 1855341672 in words is "one billion, eight hundred fifty-five million, three hundred forty-one thousand, six hundred seventy-two".