1814467961 has 4 divisors (see below), whose sum is σ = 1814700900. Its totient is φ = 1814235024.

The previous prime is 1814467951. The next prime is 1814467973. The reversal of 1814467961 is 1697644181.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 709902736 + 1104565225 = 26644^2 + 33235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1814467961 - 2²² = 1810273657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1814467931) 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, 104366 + ... + 120503.

It is an arithmetic number, because the mean of its divisors is an integer number (453675225).

Almost surely, 2^1814467961 is an apocalyptic number.

It is an amenable number.

1814467961 is a deficient number, since it is larger than the sum of its proper divisors (232939).

1814467961 is an equidigital number, since it uses as much as digits as its factorization.

1814467961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232938.

The product of its digits is 290304, while the sum is 47.

The square root of 1814467961 is about 42596.5721742959. The cubic root of 1814467961 is about 1219.6908562313.

The spelling of 1814467961 in words is "one billion, eight hundred fourteen million, four hundred sixty-seven thousand, nine hundred sixty-one".