1908313 has 4 divisors (see below), whose sum is σ = 2081808. Its totient is φ = 1734820.

The previous prime is 1908311. The next prime is 1908317. The reversal of 1908313 is 3138091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3138091 = 11 ⋅285281.

It is a cyclic number.

It is not a de Polignac number, because 1908313 - 2¹ = 1908311 is a prime.

It is a Duffinian number.

1908313 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1908311) 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, 86731 + ... + 86752.

It is an arithmetic number, because the mean of its divisors is an integer number (520452).

2^1908313 is an apocalyptic number.

It is an amenable number.

1908313 is a deficient number, since it is larger than the sum of its proper divisors (173495).

1908313 is a wasteful number, since it uses less digits than its factorization.

1908313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173494.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1908313 is about 1381.4170261004. The cubic root of 1908313 is about 124.0366046979.

The spelling of 1908313 in words is "one million, nine hundred eight thousand, three hundred thirteen".