3901613 has 4 divisors (see below), whose sum is σ = 4007100. Its totient is φ = 3796128.

The previous prime is 3901609. The next prime is 3901649. The reversal of 3901613 is 3161093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3161093 = 13 ⋅243161.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 1283689 = 1618^2 + 1133^2 .

It is a cyclic number.

It is not a de Polignac number, because 3901613 - 2² = 3901609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3901673) 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, 52688 + ... + 52761.

It is an arithmetic number, because the mean of its divisors is an integer number (1001775).

Almost surely, 2^3901613 is an apocalyptic number.

It is an amenable number.

3901613 is a deficient number, since it is larger than the sum of its proper divisors (105487).

3901613 is a wasteful number, since it uses less digits than its factorization.

3901613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105486.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 3901613 is about 1975.2501107455. The cubic root of 3901613 is about 157.4277891872.

The spelling of 3901613 in words is "three million, nine hundred one thousand, six hundred thirteen".