1945950805 has 8 divisors (see below), whose sum is σ = 2398253112. Its totient is φ = 1514685888.

The previous prime is 1945950793. The next prime is 1945950833. The reversal of 1945950805 is 5080595491.

It can be written as a sum of positive squares in 4 ways, for example, as 290600209 + 1655350596 = 17047^2 + 40686^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1945950805 - 2¹³ = 1945942613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5259142 + ... + 5259511.

It is an arithmetic number, because the mean of its divisors is an integer number (299781639).

Almost surely, 2^1945950805 is an apocalyptic number.

It is an amenable number.

1945950805 is a deficient number, since it is larger than the sum of its proper divisors (452302307).

1945950805 is a wasteful number, since it uses less digits than its factorization.

1945950805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10518695.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 1945950805 is about 44112.9324008278. The cubic root of 1945950805 is about 1248.4676273014.

The spelling of 1945950805 in words is "one billion, nine hundred forty-five million, nine hundred fifty thousand, eight hundred five".