83918061 has 6 divisors (see below), whose sum is σ = 121214990. Its totient is φ = 55945368.

The previous prime is 83918059. The next prime is 83918071. The reversal of 83918061 is 16081938.

It can be written as a sum of positive squares in only one way, i.e., 77105961 + 6812100 = 8781^2 + 2610^2 .

It is not a de Polignac number, because 83918061 - 2¹ = 83918059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83918071) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 4662106 + ... + 4662123.

Almost surely, 2^83918061 is an apocalyptic number.

It is an amenable number.

83918061 is a deficient number, since it is larger than the sum of its proper divisors (37296929).

83918061 is a wasteful number, since it uses less digits than its factorization.

83918061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9324235 (or 9324232 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 83918061 is about 9160.6801603374. The cubic root of 83918061 is about 437.8094655106.

Adding to 83918061 its reverse (16081938), we get a palindrome (99999999).

The spelling of 83918061 in words is "eighty-three million, nine hundred eighteen thousand, sixty-one".