1423640351 has 16 divisors (see below), whose sum is σ = 1648177920. Its totient is φ = 1204441920.

The previous prime is 1423640347. The next prime is 1423640357. The reversal of 1423640351 is 1530463241.

It is a cyclic number.

It is not a de Polignac number, because 1423640351 - 2² = 1423640347 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 (1423640357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428840 + ... + 432146.

It is an arithmetic number, because the mean of its divisors is an integer number (103011120).

Almost surely, 2^1423640351 is an apocalyptic number.

1423640351 is a deficient number, since it is larger than the sum of its proper divisors (224537569).

1423640351 is an equidigital number, since it uses as much as digits as its factorization.

1423640351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1423640351 is about 37731.1588875826. The cubic root of 1423640351 is about 1124.9505429452.

The spelling of 1423640351 in words is "one billion, four hundred twenty-three million, six hundred forty thousand, three hundred fifty-one".