3687742361 has 6 divisors (see below), whose sum is σ = 3810540186. Its totient is φ = 3568782000.

The previous prime is 3687742339. The next prime is 3687742369. The reversal of 3687742361 is 1632477863.

It can be written as a sum of positive squares in only one way, i.e., 3672966025 + 14776336 = 60605^2 + 3844^2 .

It is not a de Polignac number, because 3687742361 - 2⁶ = 3687742297 is a prime.

It is a super-2 number, since 2×3687742361² = 27198887442227708642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3687742369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1917740 + ... + 1919661.

It is an arithmetic number, because the mean of its divisors is an integer number (635090031).

Almost surely, 2^3687742361 is an apocalyptic number.

3687742361 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3687742361 is a deficient number, since it is larger than the sum of its proper divisors (122797825).

3687742361 is an equidigital number, since it uses as much as digits as its factorization.

3687742361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837463 (or 3837432 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The square root of 3687742361 is about 60726.7845435603. The cubic root of 3687742361 is about 1544.9704977208.

The spelling of 3687742361 in words is "three billion, six hundred eighty-seven million, seven hundred forty-two thousand, three hundred sixty-one".