1423921790 has 8 divisors (see below), whose sum is σ = 2563059240. Its totient is φ = 569568712.

The previous prime is 1423921781. The next prime is 1423921813. The reversal of 1423921790 is 971293241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 71196080 + ... + 71196099.

It is an arithmetic number, because the mean of its divisors is an integer number (320382405).

Almost surely, 2^1423921790 is an apocalyptic number.

1423921790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1423921790 is a deficient number, since it is larger than the sum of its proper divisors (1139137450).

1423921790 is a wasteful number, since it uses less digits than its factorization.

1423921790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142392186.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1423921790 is about 37734.8882335697. Note that the first 3 decimals coincide. The cubic root of 1423921790 is about 1125.0246684303.

The spelling of 1423921790 in words is "one billion, four hundred twenty-three million, nine hundred twenty-one thousand, seven hundred ninety".