1000261612 has 48 divisors (see below), whose sum is σ = 2112893440. Its totient is φ = 404756352.

The previous prime is 1000261597. The next prime is 1000261621. The reversal of 1000261612 is 2161620001.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1000261612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163513 + ... + 169519.

Almost surely, 2^1000261612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000261612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1056446720).

1000261612 is an abundant number, since it is smaller than the sum of its proper divisors (1112631828).

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

1000261612 is a wasteful number, since it uses less digits than its factorization.

1000261612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6350 (or 6348 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1000261612 is about 31626.9127800992. The cubic root of 1000261612 is about 1000.0871963966.

Adding to 1000261612 its reverse (2161620001), we get a palindrome (3161881613).

The spelling of 1000261612 in words is "one billion, two hundred sixty-one thousand, six hundred twelve".