1020444319 has 4 divisors (see below), whose sum is σ = 1025280760. Its totient is φ = 1015607880.

The previous prime is 1020444311. The next prime is 1020444331. The reversal of 1020444319 is 9134440201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020444319 - 2³ = 1020444311 is a prime.

It is a super-2 number, since 2×1020444319² = 2082613216358747522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020444311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2417904 + ... + 2418325.

It is an arithmetic number, because the mean of its divisors is an integer number (256320190).

Almost surely, 2^1020444319 is an apocalyptic number.

1020444319 is a deficient number, since it is larger than the sum of its proper divisors (4836441).

1020444319 is an equidigital number, since it uses as much as digits as its factorization.

1020444319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836440.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1020444319 is about 31944.3941717479. The cubic root of 1020444319 is about 1006.7688522621.

The spelling of 1020444319 in words is "one billion, twenty million, four hundred forty-four thousand, three hundred nineteen".