11405381810 has 8 divisors (see below), whose sum is σ = 20529687276. Its totient is φ = 4562152720.

The previous prime is 11405381797. The next prime is 11405381839. The reversal of 11405381810 is 1818350411.

It can be written as a sum of positive squares in 2 ways, for example, as 11170587481 + 234794329 = 105691^2 + 15323^2 .

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

It is a super-2 number, since 2×11405381810² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570269081 + ... + 570269100.

Almost surely, 2^11405381810 is an apocalyptic number.

11405381810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11405381810 is a deficient number, since it is larger than the sum of its proper divisors (9124305466).

11405381810 is a wasteful number, since it uses less digits than its factorization.

11405381810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140538188.

The product of its (nonzero) digits is 3840, while the sum is 32.

The spelling of 11405381810 in words is "eleven billion, four hundred five million, three hundred eighty-one thousand, eight hundred ten".