1945614999 has 4 divisors (see below), whose sum is σ = 2594153336. Its totient is φ = 1297076664.

The previous prime is 1945614977. The next prime is 1945615019. The reversal of 1945614999 is 9994165491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9994165491 = 3 ⋅3331388497.

It is not a de Polignac number, because 1945614999 - 2⁵ = 1945614967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945614499) 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, 324269164 + ... + 324269169.

It is an arithmetic number, because the mean of its divisors is an integer number (648538334).

Almost surely, 2^1945614999 is an apocalyptic number.

1945614999 is a deficient number, since it is larger than the sum of its proper divisors (648538337).

1945614999 is an equidigital number, since it uses as much as digits as its factorization.

1945614999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648538336.

The product of its digits is 3149280, while the sum is 57.

The square root of 1945614999 is about 44109.1260285216. The cubic root of 1945614999 is about 1248.3958085900.

The spelling of 1945614999 in words is "one billion, nine hundred forty-five million, six hundred fourteen thousand, nine hundred ninety-nine".