1813461001 has 6 divisors (see below), whose sum is σ = 1993308506. Its totient is φ = 1648600800.

The previous prime is 1813460989. The next prime is 1813461011. The reversal of 1813461001 is 1001643181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1321686025 + 491774976 = 36355^2 + 22176^2 .

It is not a de Polignac number, because 1813461001 - 2⁵ = 1813460969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1813461011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7493520 + ... + 7493761.

Almost surely, 2^1813461001 is an apocalyptic number.

1813461001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1813461001 is a deficient number, since it is larger than the sum of its proper divisors (179847505).

1813461001 is a wasteful number, since it uses less digits than its factorization.

1813461001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14987303 (or 14987292 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1813461001 is about 42584.7508035447. The cubic root of 1813461001 is about 1219.4651872935.

The spelling of 1813461001 in words is "one billion, eight hundred thirteen million, four hundred sixty-one thousand, one".