4157021805 has 16 divisors (see below), whose sum is σ = 6715812480. Its totient is φ = 2195552448.

The previous prime is 4157021801. The next prime is 4157021807. The reversal of 4157021805 is 5081207514.

It is not a de Polignac number, because 4157021805 - 2² = 4157021801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4157021801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1343770 + ... + 1346859.

It is an arithmetic number, because the mean of its divisors is an integer number (419738280).

Almost surely, 2^4157021805 is an apocalyptic number.

It is an amenable number.

4157021805 is a deficient number, since it is larger than the sum of its proper divisors (2558790675).

4157021805 is a wasteful number, since it uses less digits than its factorization.

4157021805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690740.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 4157021805 is about 64474.9703761080. The cubic root of 4157021805 is about 1607.9064135621.

The spelling of 4157021805 in words is "four billion, one hundred fifty-seven million, twenty-one thousand, eight hundred five".