143901946449 has 6 divisors (see below), whose sum is σ = 207858367106. Its totient is φ = 95934630960.

The previous prime is 143901946421. The next prime is 143901946459. The reversal of 143901946449 is 944649109341.

143901946449 is a `hidden beast` number, since 1 + 4 + 3 + 9 + 0 + 194 + 6 + 449 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87398279424 + 56503667025 = 295632^2 + 237705^2 .

It is not a de Polignac number, because 143901946449 - 2¹¹ = 143901944401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143901946395 and 143901946404.

It is not an unprimeable number, because it can be changed into a prime (143901946459) 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, 7994552572 + ... + 7994552589.

Almost surely, 2^143901946449 is an apocalyptic number.

It is an amenable number.

143901946449 is a deficient number, since it is larger than the sum of its proper divisors (63956420657).

143901946449 is a wasteful number, since it uses less digits than its factorization.

143901946449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15989105167 (or 15989105164 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 143901946449 in words is "one hundred forty-three billion, nine hundred one million, nine hundred forty-six thousand, four hundred forty-nine".