1913078966939 has 16 divisors (see below), whose sum is σ = 2335798368000. Its totient is φ = 1530291416544.

The previous prime is 1913078966917. The next prime is 1913078967013. The reversal of 1913078966939 is 9396698703191.

It is a cyclic number.

It is not a de Polignac number, because 1913078966939 - 2¹² = 1913078962843 is a prime.

It is a super-2 number, since 2×1913078966939² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1913078966339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107334764 + ... + 107352585.

It is an arithmetic number, because the mean of its divisors is an integer number (145987398000).

Almost surely, 2^{1913078966939} is an apocalyptic number.

1913078966939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1913078966939 is a deficient number, since it is larger than the sum of its proper divisors (422719401061).

1913078966939 is a wasteful number, since it uses less digits than its factorization.

1913078966939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214687442.

The product of its (nonzero) digits is 119042784, while the sum is 71.

The spelling of 1913078966939 in words is "one trillion, nine hundred thirteen billion, seventy-eight million, nine hundred sixty-six thousand, nine hundred thirty-nine".