1945084089 has 16 divisors (see below), whose sum is σ = 2804082624. Its totient is φ = 1192200000.

The previous prime is 1945084039. The next prime is 1945084109. The reversal of 1945084089 is 9804805491.

It is not a de Polignac number, because 1945084089 - 2¹² = 1945079993 is a prime.

It is a super-2 number, since 2×1945084089² = 7566704226561919842, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1945084039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89562 + ... + 109139.

It is an arithmetic number, because the mean of its divisors is an integer number (175255164).

Almost surely, 2^1945084089 is an apocalyptic number.

It is an amenable number.

1945084089 is a deficient number, since it is larger than the sum of its proper divisors (858998535).

1945084089 is a wasteful number, since it uses less digits than its factorization.

1945084089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198968.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 1945084089 is about 44103.1074755510. The cubic root of 1945084089 is about 1248.2822461921.

The spelling of 1945084089 in words is "one billion, nine hundred forty-five million, eighty-four thousand, eighty-nine".