1642168748 has 24 divisors (see below), whose sum is σ = 3194205840. Its totient is φ = 732355520.

The previous prime is 1642168729. The next prime is 1642168751. The reversal of 1642168748 is 8478612461.

It is an unprimeable number.

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, 349763 + ... + 354426.

It is an arithmetic number, because the mean of its divisors is an integer number (133091910).

Almost surely, 2^1642168748 is an apocalyptic number.

It is an amenable number.

1642168748 is a deficient number, since it is larger than the sum of its proper divisors (1552037092).

1642168748 is a wasteful number, since it uses less digits than its factorization.

1642168748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704257 (or 704255 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 1642168748 is about 40523.6813233941. The cubic root of 1642168748 is about 1179.7933057481.

The spelling of 1642168748 in words is "one billion, six hundred forty-two million, one hundred sixty-eight thousand, seven hundred forty-eight".