1949945784 has 32 divisors (see below), whose sum is σ = 4877003520. Its totient is φ = 649696736.

The previous prime is 1949945771. The next prime is 1949945801. The reversal of 1949945784 is 4875499491.

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, 42127 + ... + 75329.

It is an arithmetic number, because the mean of its divisors is an integer number (152406360).

Almost surely, 2^1949945784 is an apocalyptic number.

It is an amenable number.

1949945784 is an abundant number, since it is smaller than the sum of its proper divisors (2927057736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1949945784 is a wasteful number, since it uses less digits than its factorization.

1949945784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35659 (or 35655 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The square root of 1949945784 is about 44158.1904520554. The cubic root of 1949945784 is about 1249.3213989205.

The spelling of 1949945784 in words is "one billion, nine hundred forty-nine million, nine hundred forty-five thousand, seven hundred eighty-four".