6419987746 has 16 divisors (see below), whose sum is σ = 10639776384. Its totient is φ = 2889815104.

The previous prime is 6419987713. The next prime is 6419987789. The reversal of 6419987746 is 6477899146.

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, 4104070 + ... + 4105633.

It is an arithmetic number, because the mean of its divisors is an integer number (664986024).

Almost surely, 2^6419987746 is an apocalyptic number.

6419987746 is a deficient number, since it is larger than the sum of its proper divisors (4219788638).

6419987746 is a wasteful number, since it uses less digits than its factorization.

6419987746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8209745.

The product of its digits is 18289152, while the sum is 61.

The square root of 6419987746 is about 80124.8260278923. The cubic root of 6419987746 is about 1858.5663352068.

The spelling of 6419987746 in words is "six billion, four hundred nineteen million, nine hundred eighty-seven thousand, seven hundred forty-six".