872144019 has 24 divisors (see below), whose sum is σ = 1280616480. Its totient is φ = 571874688.

The previous prime is 872144011. The next prime is 872144041. The reversal of 872144019 is 910441278.

It is not a de Polignac number, because 872144019 - 2³ = 872144011 is a prime.

It is a super-2 number, since 2×872144019² = 1521270379754944722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872144011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155034 + ... + 160560.

It is an arithmetic number, because the mean of its divisors is an integer number (53359020).

Almost surely, 2^872144019 is an apocalyptic number.

872144019 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

872144019 is a deficient number, since it is larger than the sum of its proper divisors (408472461).

872144019 is a wasteful number, since it uses less digits than its factorization.

872144019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819 (or 5816 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 872144019 is about 29532.0845691597. The cubic root of 872144019 is about 955.4238294929.

The spelling of 872144019 in words is "eight hundred seventy-two million, one hundred forty-four thousand, nineteen".