143913818 has 8 divisors (see below), whose sum is σ = 215938548. Its totient is φ = 71934304.

The previous prime is 143913799. The next prime is 143913839. The reversal of 143913818 is 818319341.

It can be written as a sum of positive squares in 2 ways, for example, as 136585969 + 7327849 = 11687^2 + 2707^2 .

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

It is a super-2 number, since 2×143913818² = 41422374022674248, which contains 22 as substring.

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, 1721 + ... + 17052.

Almost surely, 2^143913818 is an apocalyptic number.

143913818 is a deficient number, since it is larger than the sum of its proper divisors (72024730).

143913818 is a wasteful number, since it uses less digits than its factorization.

143913818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22608.

The product of its digits is 20736, while the sum is 38.

The square root of 143913818 is about 11996.4085458941. The cubic root of 143913818 is about 524.0436928196.

The spelling of 143913818 in words is "one hundred forty-three million, nine hundred thirteen thousand, eight hundred eighteen".