1961814427 has 8 divisors (see below), whose sum is σ = 1983025296. Its totient is φ = 1940623872.

The previous prime is 1961814401. The next prime is 1961814431. The reversal of 1961814427 is 7244181691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1961814427 - 2¹⁵ = 1961781659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1961814457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265728 + ... + 273010.

It is an arithmetic number, because the mean of its divisors is an integer number (247878162).

Almost surely, 2^1961814427 is an apocalyptic number.

1961814427 is a deficient number, since it is larger than the sum of its proper divisors (21210869).

1961814427 is an equidigital number, since it uses as much as digits as its factorization.

1961814427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157.

The product of its digits is 96768, while the sum is 43.

The square root of 1961814427 is about 44292.3743662495. The cubic root of 1961814427 is about 1251.8510021067.

The spelling of 1961814427 in words is "one billion, nine hundred sixty-one million, eight hundred fourteen thousand, four hundred twenty-seven".