3400738781 has 32 divisors (see below), whose sum is σ = 3892202496. Its totient is φ = 2943360000.

The previous prime is 3400738777. The next prime is 3400738793. The reversal of 3400738781 is 1878370043.

It is a cyclic number.

It is not a de Polignac number, because 3400738781 - 2² = 3400738777 is a prime.

It is a super-2 number, since 2×3400738781² = 23130048513194731922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3400738771) 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 31 ways as a sum of consecutive naturals, for example, 10091045 + ... + 10091381.

It is an arithmetic number, because the mean of its divisors is an integer number (121631328).

Almost surely, 2^3400738781 is an apocalyptic number.

3400738781 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3400738781 is a deficient number, since it is larger than the sum of its proper divisors (491463715).

3400738781 is a wasteful number, since it uses less digits than its factorization.

3400738781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 3400738781 is about 58315.8535991715. The cubic root of 3400738781 is about 1503.8035001800.

The spelling of 3400738781 in words is "three billion, four hundred million, seven hundred thirty-eight thousand, seven hundred eighty-one".