9780601913 has 4 divisors (see below), whose sum is σ = 9781412388. Its totient is φ = 9779791440.

The previous prime is 9780601877. The next prime is 9780601921. The reversal of 9780601913 is 3191060879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3191060879 = 373 ⋅8555123.

It can be written as a sum of positive squares in 2 ways, for example, as 7297772329 + 2482829584 = 85427^2 + 49828^2 .

It is a cyclic number.

It is not a de Polignac number, because 9780601913 - 2⁶ = 9780601849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9780601933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386858 + ... + 411363.

It is an arithmetic number, because the mean of its divisors is an integer number (2445353097).

Almost surely, 2^9780601913 is an apocalyptic number.

It is an amenable number.

9780601913 is a deficient number, since it is larger than the sum of its proper divisors (810475).

9780601913 is a wasteful number, since it uses less digits than its factorization.

9780601913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810474.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 9780601913 is about 98896.9257004483. The cubic root of 9780601913 is about 2138.5620754220.

The spelling of 9780601913 in words is "nine billion, seven hundred eighty million, six hundred one thousand, nine hundred thirteen".