1966846845 has 32 divisors (see below), whose sum is σ = 3426825600. Its totient is φ = 959503104.

The previous prime is 1966846837. The next prime is 1966846853. The reversal of 1966846845 is 5486486691.

It is an interprime number because it is at equal distance from previous prime (1966846837) and next prime (1966846853).

It is not a de Polignac number, because 1966846845 - 2³ = 1966846837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110722 + ... + 127251.

It is an arithmetic number, because the mean of its divisors is an integer number (107088300).

Almost surely, 2^1966846845 is an apocalyptic number.

1966846845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1966846845 is a deficient number, since it is larger than the sum of its proper divisors (1459978755).

1966846845 is a wasteful number, since it uses less digits than its factorization.

1966846845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238029.

The product of its digits is 9953280, while the sum is 57.

The square root of 1966846845 is about 44349.1470605693. The cubic root of 1966846845 is about 1252.9204981716.

It can be divided in two parts, 1966846 and 845, that added together give a palindrome (1967691).

The spelling of 1966846845 in words is "one billion, nine hundred sixty-six million, eight hundred forty-six thousand, eight hundred forty-five".