1916356461 has 4 divisors (see below), whose sum is σ = 2555141952. Its totient is φ = 1277570972.

The previous prime is 1916356439. The next prime is 1916356469. The reversal of 1916356461 is 1646536191.

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 1916356461 - 2¹⁸ = 1916094317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916356469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319392741 + ... + 319392746.

It is an arithmetic number, because the mean of its divisors is an integer number (638785488).

Almost surely, 2^1916356461 is an apocalyptic number.

It is an amenable number.

1916356461 is a deficient number, since it is larger than the sum of its proper divisors (638785491).

1916356461 is an equidigital number, since it uses as much as digits as its factorization.

1916356461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638785490.

The product of its digits is 116640, while the sum is 42.

The square root of 1916356461 is about 43776.2088468154. The cubic root of 1916356461 is about 1242.1063015635.

The spelling of 1916356461 in words is "one billion, nine hundred sixteen million, three hundred fifty-six thousand, four hundred sixty-one".