1913031993601 has 16 divisors (see below), whose sum is σ = 2043030781440. Its totient is φ = 1787313306240.

The previous prime is 1913031993571. The next prime is 1913031993617. The reversal of 1913031993601 is 1063991303191.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1913031993601 - 2¹⁷ = 1913031862529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1913031993101) 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, 9952930 + ... + 10143316.

It is an arithmetic number, because the mean of its divisors is an integer number (127689423840).

Almost surely, 2^{1913031993601} is an apocalyptic number.

It is an amenable number.

1913031993601 is a deficient number, since it is larger than the sum of its proper divisors (129998787839).

1913031993601 is a wasteful number, since it uses less digits than its factorization.

1913031993601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201624.

The product of its (nonzero) digits is 118098, while the sum is 46.

The spelling of 1913031993601 in words is "one trillion, nine hundred thirteen billion, thirty-one million, nine hundred ninety-three thousand, six hundred one".