1641123601 has 16 divisors (see below), whose sum is σ = 1887298560. Its totient is φ = 1415453760.

The previous prime is 1641123593. The next prime is 1641123619. The reversal of 1641123601 is 1063211461.

It is a cyclic number.

It is not a de Polignac number, because 1641123601 - 2³ = 1641123593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641123401) 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, 58525 + ... + 81898.

It is an arithmetic number, because the mean of its divisors is an integer number (117956160).

Almost surely, 2^1641123601 is an apocalyptic number.

It is an amenable number.

1641123601 is a deficient number, since it is larger than the sum of its proper divisors (246174959).

1641123601 is a wasteful number, since it uses less digits than its factorization.

1641123601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140496.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1641123601 is about 40510.7837618578. The cubic root of 1641123601 is about 1179.5429621870.

The spelling of 1641123601 in words is "one billion, six hundred forty-one million, one hundred twenty-three thousand, six hundred one".