1801601613 has 24 divisors (see below), whose sum is σ = 2987432448. Its totient is φ = 1024862112.

The previous prime is 1801601591. The next prime is 1801601621. The reversal of 1801601613 is 3161061081.

It is not a de Polignac number, because 1801601613 - 2¹² = 1801597517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801601513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50070 + ... + 78167.

It is an arithmetic number, because the mean of its divisors is an integer number (124476352).

Almost surely, 2^1801601613 is an apocalyptic number.

It is an amenable number.

1801601613 is a deficient number, since it is larger than the sum of its proper divisors (1185830835).

1801601613 is a wasteful number, since it uses less digits than its factorization.

1801601613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128473 (or 128470 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1801601613 is about 42445.2778645635. The cubic root of 1801601613 is about 1216.8010822992.

Adding to 1801601613 its reverse (3161061081), we get a palindrome (4962662694).

The spelling of 1801601613 in words is "one billion, eight hundred one million, six hundred one thousand, six hundred thirteen".