1010516861 has 6 divisors (see below), whose sum is σ = 1045539390. Its totient is φ = 975506168.

The previous prime is 1010516849. The next prime is 1010516863. The reversal of 1010516861 is 1686150101.

It can be written as a sum of positive squares in only one way, i.e., 871135225 + 139381636 = 29515^2 + 11806^2 .

It is not a de Polignac number, because 1010516861 - 2¹⁰ = 1010515837 is a prime.

It is a super-2 number, since 2×1010516861² = 2042288652730586642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010516863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168236 + ... + 174138.

It is an arithmetic number, because the mean of its divisors is an integer number (174256565).

Almost surely, 2^1010516861 is an apocalyptic number.

It is an amenable number.

1010516861 is a deficient number, since it is larger than the sum of its proper divisors (35022529).

1010516861 is an frugal number, since it uses more digits than its factorization.

1010516861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11835 (or 5932 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 1010516861 is about 31788.6278565150. The cubic root of 1010516861 is about 1003.4934022630.

Multiplying 1010516861 by its sum of digits (29), we get a square (29304988969 = 171187²).

1010516861 divided by its sum of digits (29) gives a square (34845409 = 5903²).

Adding to 1010516861 its reverse (1686150101), we get a palindrome (2696666962).

The spelling of 1010516861 in words is "one billion, ten million, five hundred sixteen thousand, eight hundred sixty-one".