3747146309 has 4 divisors (see below), whose sum is σ = 3763228716. Its totient is φ = 3731063904.

The previous prime is 3747146281. The next prime is 3747146311. The reversal of 3747146309 is 9036417473.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 418202500 + 3328943809 = 20450^2 + 57697^2 .

It is a cyclic number.

It is not a de Polignac number, because 3747146309 - 2¹² = 3747142213 is a prime.

It is a super-2 number, since 2×3747146309² = 28082210922104646962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3747146309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3747146329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8040854 + ... + 8041319.

It is an arithmetic number, because the mean of its divisors is an integer number (940807179).

Almost surely, 2^3747146309 is an apocalyptic number.

It is an amenable number.

3747146309 is a deficient number, since it is larger than the sum of its proper divisors (16082407).

3747146309 is a wasteful number, since it uses less digits than its factorization.

3747146309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16082406.

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 3747146309 is about 61213.9388456583. The cubic root of 3747146309 is about 1553.2220604603. Note that the first 3 decimals are identical.

The spelling of 3747146309 in words is "three billion, seven hundred forty-seven million, one hundred forty-six thousand, three hundred nine".