1855070945 has 16 divisors (see below), whose sum is σ = 2739797760. Its totient is φ = 1174198464.

The previous prime is 1855070897. The next prime is 1855070981. The reversal of 1855070945 is 5490705581.

It is a cyclic number.

It is not a de Polignac number, because 1855070945 - 2⁸ = 1855070689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1855070896 and 1855070905.

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, 2038085 + ... + 2038994.

It is an arithmetic number, because the mean of its divisors is an integer number (171237360).

Almost surely, 2^1855070945 is an apocalyptic number.

It is an amenable number.

1855070945 is a deficient number, since it is larger than the sum of its proper divisors (884726815).

1855070945 is a wasteful number, since it uses less digits than its factorization.

1855070945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077104.

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 1855070945 is about 43070.5345334836. The cubic root of 1855070945 is about 1228.7216420770.

The spelling of 1855070945 in words is "one billion, eight hundred fifty-five million, seventy thousand, nine hundred forty-five".