19120365381 has 8 divisors (see below), whose sum is σ = 27454883680. Its totient is φ = 11766378672.

The previous prime is 19120365377. The next prime is 19120365479. The reversal of 19120365381 is 18356302191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19120365381 - 2² = 19120365377 is a prime.

It is a super-2 number, since 2×19120365381² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 490265779 = 19120365381 / (1 + 9 + 1 + 2 + 0 + 3 + 6 + 5 + 3 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19120365311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245132851 + ... + 245132928.

It is an arithmetic number, because the mean of its divisors is an integer number (3431860460).

Almost surely, 2^19120365381 is an apocalyptic number.

It is an amenable number.

19120365381 is a deficient number, since it is larger than the sum of its proper divisors (8334518299).

19120365381 is a wasteful number, since it uses less digits than its factorization.

19120365381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490265795.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 19120365381 in words is "nineteen billion, one hundred twenty million, three hundred sixty-five thousand, three hundred eighty-one".