1442861889 has 12 divisors (see below), whose sum is σ = 2237908464. Its totient is φ = 824492424.

The previous prime is 1442861869. The next prime is 1442861897. The reversal of 1442861889 is 9881682441.

It is not a de Polignac number, because 1442861889 - 2⁹ = 1442861377 is a prime.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1442861869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4907547 + ... + 4907840.

It is an arithmetic number, because the mean of its divisors is an integer number (186492372).

Almost surely, 2^1442861889 is an apocalyptic number.

It is an amenable number.

1442861889 is a deficient number, since it is larger than the sum of its proper divisors (795046575).

1442861889 is an equidigital number, since it uses as much as digits as its factorization.

1442861889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9815404 (or 9815397 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 1442861889 is about 37985.0219033766. The cubic root of 1442861889 is about 1129.9908342379.

The spelling of 1442861889 in words is "one billion, four hundred forty-two million, eight hundred sixty-one thousand, eight hundred eighty-nine".