1949949065 has 8 divisors (see below), whose sum is σ = 2348837568. Its totient is φ = 1554026800.

The previous prime is 1949949049. The next prime is 1949949077. The reversal of 1949949065 is 5609499491.

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

It is not a de Polignac number, because 1949949065 - 2⁴ = 1949949049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1949949065.

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, 740111 + ... + 742740.

It is an arithmetic number, because the mean of its divisors is an integer number (293604696).

Almost surely, 2^1949949065 is an apocalyptic number.

It is an amenable number.

1949949065 is a deficient number, since it is larger than the sum of its proper divisors (398888503).

1949949065 is a wasteful number, since it uses less digits than its factorization.

1949949065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483119.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 1949949065 is about 44158.2276025658. The cubic root of 1949949065 is about 1249.3220996273.

The spelling of 1949949065 in words is "one billion, nine hundred forty-nine million, nine hundred forty-nine thousand, sixty-five".