1423940768 has 12 divisors (see below), whose sum is σ = 2803383450. Its totient is φ = 711970368.

The previous prime is 1423940767. The next prime is 1423940773. The reversal of 1423940768 is 8670493241.

It can be written as a sum of positive squares in only one way, i.e., 1175941264 + 247999504 = 34292^2 + 15748^2 .

It is not an unprimeable number, because it can be changed into a prime (1423940767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22249043 + ... + 22249106.

Almost surely, 2^1423940768 is an apocalyptic number.

It is an amenable number.

1423940768 is a deficient number, since it is larger than the sum of its proper divisors (1379442682).

1423940768 is an equidigital number, since it uses as much as digits as its factorization.

1423940768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44498159 (or 44498151 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 1423940768 is about 37735.1396976346. The cubic root of 1423940768 is about 1125.0296665099.

The spelling of 1423940768 in words is "one billion, four hundred twenty-three million, nine hundred forty thousand, seven hundred sixty-eight".