1914131640961 has 4 divisors (see below), whose sum is σ = 1914949998000. Its totient is φ = 1913313283924.

The previous prime is 1914131640937. The next prime is 1914131640979. The reversal of 1914131640961 is 1690461314191.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1914131640961 - 2²⁹ = 1913594770049 is a prime.

It is a super-2 number, since 2×1914131640961² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1914131640931) 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, 409175011 + ... + 409179688.

It is an arithmetic number, because the mean of its divisors is an integer number (478737499500).

Almost surely, 2^{1914131640961} is an apocalyptic number.

It is an amenable number.

1914131640961 is a deficient number, since it is larger than the sum of its proper divisors (818357039).

1914131640961 is an equidigital number, since it uses as much as digits as its factorization.

1914131640961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818357038.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 1914131640961 in words is "one trillion, nine hundred fourteen billion, one hundred thirty-one million, six hundred forty thousand, nine hundred sixty-one".