1940263 has 4 divisors (see below), whose sum is σ = 2089528. Its totient is φ = 1791000.

The previous prime is 1940233. The next prime is 1940269. The reversal of 1940263 is 3620491.

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 1940263 - 2¹³ = 1932071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74613 + ... + 74638.

It is an arithmetic number, because the mean of its divisors is an integer number (522382).

2^1940263 is an apocalyptic number.

1940263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1940263 is a deficient number, since it is larger than the sum of its proper divisors (149265).

1940263 is a wasteful number, since it uses less digits than its factorization.

1940263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149264.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1940263 is about 1392.9332360167. The cubic root of 1940263 is about 124.7250061373.

The spelling of 1940263 in words is "one million, nine hundred forty thousand, two hundred sixty-three".