1859868672 has 96 divisors (see below), whose sum is σ = 4981616640. Its totient is φ = 617062400.

The previous prime is 1859868667. The next prime is 1859868679. The reversal of 1859868672 is 2768689581.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1859868672² = 6918222954174087168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1859868679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1615297 + ... + 1616447.

It is an arithmetic number, because the mean of its divisors is an integer number (51891840).

Almost surely, 2^1859868672 is an apocalyptic number.

1859868672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1859868672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2490808320).

1859868672 is an abundant number, since it is smaller than the sum of its proper divisors (3121747968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1859868672 is a wasteful number, since it uses less digits than its factorization.

1859868672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 1419 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 60.

The square root of 1859868672 is about 43126.1947312767. The cubic root of 1859868672 is about 1229.7800016342.

The spelling of 1859868672 in words is "one billion, eight hundred fifty-nine million, eight hundred sixty-eight thousand, six hundred seventy-two".