1940215423 has 4 divisors (see below), whose sum is σ = 2054345760. Its totient is φ = 1826085088.

The previous prime is 1940215379. The next prime is 1940215447. The reversal of 1940215423 is 3245120491.

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

It is a cyclic number.

It is not a de Polignac number, because 1940215423 - 2¹³ = 1940207231 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940212423) 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, 57065143 + ... + 57065176.

It is an arithmetic number, because the mean of its divisors is an integer number (513586440).

Almost surely, 2^1940215423 is an apocalyptic number.

1940215423 is a deficient number, since it is larger than the sum of its proper divisors (114130337).

1940215423 is a wasteful number, since it uses less digits than its factorization.

1940215423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114130336.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1940215423 is about 44047.8764868410. The cubic root of 1940215423 is about 1247.2398667240.

The spelling of 1940215423 in words is "one billion, nine hundred forty million, two hundred fifteen thousand, four hundred twenty-three".