1945860855 has 16 divisors (see below), whose sum is σ = 3213809664. Its totient is φ = 1004315040.

The previous prime is 1945860841. The next prime is 1945860877. The reversal of 1945860855 is 5580685491.

It is not a de Polignac number, because 1945860855 - 2¹¹ = 1945858807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1945860798 and 1945860807.

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, 2091859 + ... + 2092788.

It is an arithmetic number, because the mean of its divisors is an integer number (200863104).

Almost surely, 2^1945860855 is an apocalyptic number.

1945860855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1945860855 is a deficient number, since it is larger than the sum of its proper divisors (1267948809).

1945860855 is a wasteful number, since it uses less digits than its factorization.

1945860855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184686.

The product of its (nonzero) digits is 1728000, while the sum is 51.

The square root of 1945860855 is about 44111.9128467583. The cubic root of 1945860855 is about 1248.4483905367.

The spelling of 1945860855 in words is "one billion, nine hundred forty-five million, eight hundred sixty thousand, eight hundred fifty-five".