3721887013 has 4 divisors (see below), whose sum is σ = 4008186028. Its totient is φ = 3435588000.

The previous prime is 3721886983. The next prime is 3721887023. The reversal of 3721887013 is 3107881273.

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 145009764 + 3576877249 = 12042^2 + 59807^2 .

It is not a de Polignac number, because 3721887013 - 2²¹ = 3719789861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721887023) 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, 143149488 + ... + 143149513.

It is an arithmetic number, because the mean of its divisors is an integer number (1002046507).

Almost surely, 2^3721887013 is an apocalyptic number.

It is an amenable number.

3721887013 is a deficient number, since it is larger than the sum of its proper divisors (286299015).

3721887013 is a wasteful number, since it uses less digits than its factorization.

3721887013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286299014.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 3721887013 is about 61007.2701651205. The cubic root of 3721887013 is about 1549.7241289120.

The spelling of 3721887013 in words is "three billion, seven hundred twenty-one million, eight hundred eighty-seven thousand, thirteen".