1940002723 has 4 divisors (see below), whose sum is σ = 2002583488. Its totient is φ = 1877421960.

The previous prime is 1940002721. The next prime is 1940002739. The reversal of 1940002723 is 3272000491.

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 1940002723 - 2¹ = 1940002721 is a prime.

It is a super-2 number, since 2×1940002723² = 7527221130494829458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1940002691 and 1940002700.

It is not an unprimeable number, because it can be changed into a prime (1940002721) 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, 31290336 + ... + 31290397.

It is an arithmetic number, because the mean of its divisors is an integer number (500645872).

Almost surely, 2^1940002723 is an apocalyptic number.

1940002723 is a deficient number, since it is larger than the sum of its proper divisors (62580765).

1940002723 is an equidigital number, since it uses as much as digits as its factorization.

1940002723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62580764.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1940002723 is about 44045.4620023448. The cubic root of 1940002723 is about 1247.1942880026.

The spelling of 1940002723 in words is "one billion, nine hundred forty million, two thousand, seven hundred twenty-three".