1019215872 has 138 divisors (see below), whose sum is σ = 3053452948. Its totient is φ = 339738624.

The previous prime is 1019215849. The next prime is 1019215889. The reversal of 1019215872 is 2785129101.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a Jordan-Polya number, since it can be written as (4!)⁵ ⋅ (2!)⁷.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339738623 + 339738624 + 339738625.

Almost surely, 2^1019215872 is an apocalyptic number.

1019215872 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 1019215872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526726474).

1019215872 is an abundant number, since it is smaller than the sum of its proper divisors (2034237076).

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

1019215872 is an frugal number, since it uses more digits than its factorization.

1019215872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59 (or 5 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 1019215872 is about 31925.1604851095. The cubic root of 1019215872 is about 1006.3646953762.

The spelling of 1019215872 in words is "one billion, nineteen million, two hundred fifteen thousand, eight hundred seventy-two".