3405081381 has 16 divisors (see below), whose sum is σ = 4894249920. Its totient is φ = 2093333760.

The previous prime is 3405081373. The next prime is 3405081401. The reversal of 3405081381 is 1831805043.

It is not a de Polignac number, because 3405081381 - 2³ = 3405081373 is a prime.

It is a super-2 number, since 2×3405081381² = 23189158422465734322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405081331) 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, 3915 + ... + 82616.

It is an arithmetic number, because the mean of its divisors is an integer number (305890620).

Almost surely, 2^3405081381 is an apocalyptic number.

It is an amenable number.

3405081381 is a deficient number, since it is larger than the sum of its proper divisors (1489168539).

3405081381 is a wasteful number, since it uses less digits than its factorization.

3405081381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87556.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 3405081381 is about 58353.0751631823. The cubic root of 3405081381 is about 1504.4433257965.

The spelling of 3405081381 in words is "three billion, four hundred five million, eighty-one thousand, three hundred eighty-one".