1648387742 has 16 divisors (see below), whose sum is σ = 2516041440. Its totient is φ = 809793792.

The previous prime is 1648387733. The next prime is 1648387747. The reversal of 1648387742 is 2477838461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648387747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16934 + ... + 59862.

It is an arithmetic number, because the mean of its divisors is an integer number (157252590).

Almost surely, 2^1648387742 is an apocalyptic number.

1648387742 is a deficient number, since it is larger than the sum of its proper divisors (867653698).

1648387742 is a wasteful number, since it uses less digits than its factorization.

1648387742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43267.

The product of its digits is 1806336, while the sum is 50.

The square root of 1648387742 is about 40600.3416488088. The cubic root of 1648387742 is about 1181.2807462411.

The spelling of 1648387742 in words is "one billion, six hundred forty-eight million, three hundred eighty-seven thousand, seven hundred forty-two".