1949700779 has 6 divisors (see below), whose sum is σ = 2111214636. Its totient is φ = 1799723640.

The previous prime is 1949700761. The next prime is 1949700799. The reversal of 1949700779 is 9770079491.

It is not a de Polignac number, because 1949700779 - 2²⁰ = 1948652203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1949700779.

It is not an unprimeable number, because it can be changed into a prime (1949700719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5768177 + ... + 5768514.

It is an arithmetic number, because the mean of its divisors is an integer number (351869106).

Almost surely, 2^1949700779 is an apocalyptic number.

1949700779 is a deficient number, since it is larger than the sum of its proper divisors (161513857).

1949700779 is a wasteful number, since it uses less digits than its factorization.

1949700779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536717 (or 11536704 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 53.

The square root of 1949700779 is about 44155.4161909952. The cubic root of 1949700779 is about 1249.2690721989.

The spelling of 1949700779 in words is "one billion, nine hundred forty-nine million, seven hundred thousand, seven hundred seventy-nine".