1200641601 has 16 divisors (see below), whose sum is σ = 1648657664. Its totient is φ = 776646144.

The previous prime is 1200641591. The next prime is 1200641623. The reversal of 1200641601 is 1061460021.

It is not a de Polignac number, because 1200641601 - 2⁵ = 1200641569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200641671) 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, 26001 + ... + 55473.

It is an arithmetic number, because the mean of its divisors is an integer number (103041104).

Almost surely, 2^1200641601 is an apocalyptic number.

It is an amenable number.

1200641601 is a deficient number, since it is larger than the sum of its proper divisors (448016063).

1200641601 is a wasteful number, since it uses less digits than its factorization.

1200641601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29880.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1200641601 is about 34650.2756266094. The cubic root of 1200641601 is about 1062.8479251060.

The spelling of 1200641601 in words is "one billion, two hundred million, six hundred forty-one thousand, six hundred one".