1401813 has 16 divisors (see below), whose sum is σ = 2373760. Its totient is φ = 800928.

The previous prime is 1401811. The next prime is 1401817. The reversal of 1401813 is 3181041.

It is not a de Polignac number, because 1401813 - 2¹ = 1401811 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 (1401811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3520 + ... + 3897.

It is an arithmetic number, because the mean of its divisors is an integer number (148360).

2^1401813 is an apocalyptic number.

It is an amenable number.

1401813 is a deficient number, since it is larger than the sum of its proper divisors (971947).

1401813 is an equidigital number, since it uses as much as digits as its factorization.

1401813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433 (or 7427 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1401813 is about 1183.9818410770. The cubic root of 1401813 is about 111.9171634506.

Adding to 1401813 its reverse (3181041), we get a palindrome (4582854).

It can be divided in two parts, 140 and 1813, that added together give a triangular number (1953 = T₆₂).

The spelling of 1401813 in words is "one million, four hundred one thousand, eight hundred thirteen".