3684713781 has 16 divisors (see below), whose sum is σ = 5858924544. Its totient is φ = 2014004784.

The previous prime is 3684713771. The next prime is 3684713789. The reversal of 3684713781 is 1873174863.

3684713781 = T₃₂₄₄₃ + T₃₂₄₄₄ + ... + T₃₂₄₄₉.

It is not a de Polignac number, because 3684713781 - 2⁵ = 3684713749 is a prime.

It is a super-2 number, since 2×3684713781² = 27154231295782631922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3684713781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3684713789) 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, 3813921 + ... + 3814886.

It is an arithmetic number, because the mean of its divisors is an integer number (366182784).

Almost surely, 2^3684713781 is an apocalyptic number.

It is an amenable number.

3684713781 is a deficient number, since it is larger than the sum of its proper divisors (2174210763).

3684713781 is a wasteful number, since it uses less digits than its factorization.

3684713781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7628840.

The product of its digits is 677376, while the sum is 48.

The square root of 3684713781 is about 60701.8433080907. The cubic root of 3684713781 is about 1544.5474431994.

The spelling of 3684713781 in words is "three billion, six hundred eighty-four million, seven hundred thirteen thousand, seven hundred eighty-one".