1421792718 has 8 divisors (see below), whose sum is σ = 2843585448. Its totient is φ = 473930904.

The previous prime is 1421792699. The next prime is 1421792719. The reversal of 1421792718 is 8172971241.

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

1421792718 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421792718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421792719) 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 3 ways as a sum of consecutive naturals, for example, 118482721 + ... + 118482732.

It is an arithmetic number, because the mean of its divisors is an integer number (355448181).

Almost surely, 2^1421792718 is an apocalyptic number.

1421792718 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421792718 is a wasteful number, since it uses less digits than its factorization.

1421792718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236965458.

The product of its digits is 56448, while the sum is 42.

The square root of 1421792718 is about 37706.6667580151. Note that the first 3 decimals coincide. The cubic root of 1421792718 is about 1124.4636700803.

The spelling of 1421792718 in words is "one billion, four hundred twenty-one million, seven hundred ninety-two thousand, seven hundred eighteen".