1423653243 has 16 divisors (see below), whose sum is σ = 1908134400. Its totient is φ = 944148960.

The previous prime is 1423653221. The next prime is 1423653271. The reversal of 1423653243 is 3423563241.

It is a happy number.

It is not a de Polignac number, because 1423653243 - 2⁵ = 1423653211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1423653293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900828 + ... + 902406.

It is an arithmetic number, because the mean of its divisors is an integer number (119258400).

Almost surely, 2^1423653243 is an apocalyptic number.

1423653243 is a deficient number, since it is larger than the sum of its proper divisors (484481157).

1423653243 is a wasteful number, since it uses less digits than its factorization.

1423653243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962.

The product of its digits is 51840, while the sum is 33.

The square root of 1423653243 is about 37731.3297274294. The cubic root of 1423653243 is about 1124.9539386573.

The spelling of 1423653243 in words is "one billion, four hundred twenty-three million, six hundred fifty-three thousand, two hundred forty-three".