3723813 has 20 divisors (see below), whose sum is σ = 5746048. Its totient is φ = 2400840.

The previous prime is 3723809. The next prime is 3723847. The reversal of 3723813 is 3183273.

It is not a de Polignac number, because 3723813 - 2² = 3723809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3723893) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1770 + ... + 3252.

Almost surely, 2^3723813 is an apocalyptic number.

It is an amenable number.

3723813 is a deficient number, since it is larger than the sum of its proper divisors (2022235).

3723813 is a wasteful number, since it uses less digits than its factorization.

3723813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526 (or 1517 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 3723813 is about 1929.7183732348. The cubic root of 3723813 is about 154.9991397802. Note that the first 3 decimals are identical.

The spelling of 3723813 in words is "three million, seven hundred twenty-three thousand, eight hundred thirteen".