3401785538449 has 9 divisors (see below), whose sum is σ = 3556164200169. Its totient is φ = 3253841242740.

The previous prime is 3401785538387. The next prime is 3401785538497. The reversal of 3401785538449 is 9448355871043.

The square root of 3401785538449 is 1844393.

It is a perfect power (a square), and thus also a powerful number.

3401785538449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3401785538449 - 2⁷ = 3401785538321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3401785532449) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42380944 + ... + 42461134.

Almost surely, 2^{3401785538449} is an apocalyptic number.

3401785538449 is the 1844393-rd square number.

3401785538449 is the 922197-th centered octagonal number.

It is an amenable number.

3401785538449 is a deficient number, since it is larger than the sum of its proper divisors (154378661720).

3401785538449 is an frugal number, since it uses more digits than its factorization.

3401785538449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160428 (or 80214 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 61.

The spelling of 3401785538449 in words is "three trillion, four hundred one billion, seven hundred eighty-five million, five hundred thirty-eight thousand, four hundred forty-nine".