1648716939 has 12 divisors (see below), whose sum is σ = 2381886000. Its totient is φ = 1098957264.

The previous prime is 1648716919. The next prime is 1648716941. The reversal of 1648716939 is 9396178461.

It is not a de Polignac number, because 1648716939 - 2⁵ = 1648716907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1648716919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58762 + ... + 82160.

It is an arithmetic number, because the mean of its divisors is an integer number (198490500).

Almost surely, 2^1648716939 is an apocalyptic number.

1648716939 is a deficient number, since it is larger than the sum of its proper divisors (733169061).

1648716939 is a wasteful number, since it uses less digits than its factorization.

1648716939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31234 (or 31231 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 1648716939 is about 40604.3955625496. The cubic root of 1648716939 is about 1181.3593782651.

The spelling of 1648716939 in words is "one billion, six hundred forty-eight million, seven hundred sixteen thousand, nine hundred thirty-nine".