1421665118 has 8 divisors (see below), whose sum is σ = 2177870112. Its totient is φ = 695708416.

The previous prime is 1421665099. The next prime is 1421665127. The reversal of 1421665118 is 8115661241.

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

It is a super-2 number, since 2×1421665118² = 4042263415475907848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7561955 + ... + 7562142.

It is an arithmetic number, because the mean of its divisors is an integer number (272233764).

Almost surely, 2^1421665118 is an apocalyptic number.

1421665118 is a deficient number, since it is larger than the sum of its proper divisors (756204994).

1421665118 is a wasteful number, since it uses less digits than its factorization.

1421665118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15124146.

The product of its digits is 11520, while the sum is 35.

The square root of 1421665118 is about 37704.9747115682. The cubic root of 1421665118 is about 1124.4300304236.

The spelling of 1421665118 in words is "one billion, four hundred twenty-one million, six hundred sixty-five thousand, one hundred eighteen".