1914463421 has 4 divisors (see below), whose sum is σ = 2061729852. Its totient is φ = 1767196992.

The previous prime is 1914463393. The next prime is 1914463457. The reversal of 1914463421 is 1243644191.

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 579364900 + 1335098521 = 24070^2 + 36539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1914463421 - 2⁶ = 1914463357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1914463321) 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, 73633196 + ... + 73633221.

It is an arithmetic number, because the mean of its divisors is an integer number (515432463).

Almost surely, 2^1914463421 is an apocalyptic number.

It is an amenable number.

1914463421 is a deficient number, since it is larger than the sum of its proper divisors (147266431).

1914463421 is a wasteful number, since it uses less digits than its factorization.

1914463421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147266430.

The product of its digits is 20736, while the sum is 35.

The square root of 1914463421 is about 43754.5817143759. The cubic root of 1914463421 is about 1241.6971689838.

The spelling of 1914463421 in words is "one billion, nine hundred fourteen million, four hundred sixty-three thousand, four hundred twenty-one".