1913493697394 has 16 divisors (see below), whose sum is σ = 2918991846240. Its totient is φ = 940497561600.

The previous prime is 1913493697363. The next prime is 1913493697411. The reversal of 1913493697394 is 4937963943191.

It is a super-2 number, since 2×1913493697394² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3250802 + ... + 3794034.

It is an arithmetic number, because the mean of its divisors is an integer number (182436990390).

Almost surely, 2^{1913493697394} is an apocalyptic number.

1913493697394 is a deficient number, since it is larger than the sum of its proper divisors (1005498148846).

1913493697394 is a wasteful number, since it uses less digits than its factorization.

1913493697394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573145.

The product of its digits is 119042784, while the sum is 68.

The spelling of 1913493697394 in words is "one trillion, nine hundred thirteen billion, four hundred ninety-three million, six hundred ninety-seven thousand, three hundred ninety-four".