1901313 has 10 divisors (see below), whose sum is σ = 2840354. Its totient is φ = 1267488.

The previous prime is 1901299. The next prime is 1901329. The reversal of 1901313 is 3131091.

It can be written as a sum of positive squares in only one way, i.e., 1896129 + 5184 = 1377^2 + 72^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1901313 is a prime.

It is a super-2 number, since 2×1901313² = 7229982247938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1901353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11656 + ... + 11817.

2^1901313 is an apocalyptic number.

It is an amenable number.

1901313 is a deficient number, since it is larger than the sum of its proper divisors (939041).

1901313 is an equidigital number, since it uses as much as digits as its factorization.

1901313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23485 (or 23476 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 1901313 is about 1378.8810681128. The cubic root of 1901313 is about 123.8847567854.

The spelling of 1901313 in words is "one million, nine hundred one thousand, three hundred thirteen".