1011620260 has 48 divisors (see below), whose sum is σ = 2435900544. Its totient is φ = 345696768.

The previous prime is 1011620257. The next prime is 1011620273. The reversal of 1011620260 is 620261101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31212 + ... + 54748.

It is an arithmetic number, because the mean of its divisors is an integer number (50747928).

Almost surely, 2^1011620260 is an apocalyptic number.

1011620260 is a gapful number since it is divisible by the number (10) 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 1011620260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1217950272).

1011620260 is an abundant number, since it is smaller than the sum of its proper divisors (1424280284).

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

1011620260 is a wasteful number, since it uses less digits than its factorization.

1011620260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23860 (or 23858 counting only the distinct ones).

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

The square root of 1011620260 is about 31805.9783688539. The cubic root of 1011620260 is about 1003.8585127308.

Adding to 1011620260 its reverse (620261101), we get a palindrome (1631881361).

The spelling of 1011620260 in words is "one billion, eleven million, six hundred twenty thousand, two hundred sixty".