143487819 has 6 divisors (see below), whose sum is σ = 207260196. Its totient is φ = 95658540.

The previous prime is 143487811. The next prime is 143487821. The reversal of 143487819 is 918784341.

It is a happy number.

143487819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 143487819 - 2³ = 143487811 is a prime.

It is a super-2 number, since 2×143487819² = 41177508402753522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (143487811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7971537 + ... + 7971554.

It is an arithmetic number, because the mean of its divisors is an integer number (34543366).

Almost surely, 2^143487819 is an apocalyptic number.

143487819 is a deficient number, since it is larger than the sum of its proper divisors (63772377).

143487819 is a wasteful number, since it uses less digits than its factorization.

143487819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15943097 (or 15943094 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 143487819 is about 11978.6401148044. The cubic root of 143487819 is about 523.5261082263.

It can be divided in two parts, 1434 and 87819, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 143487819 in words is "one hundred forty-three million, four hundred eighty-seven thousand, eight hundred nineteen".