83147868949 has 2 divisors, whose sum is σ = 83147868950. Its totient is φ = 83147868948.

The previous prime is 83147868901. The next prime is 83147869003. The reversal of 83147868949 is 94986874138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44344778724 + 38803090225 = 210582^2 + 196985^2 .

It is a cyclic number.

It is not a de Polignac number, because 83147868949 - 2²⁷ = 83013651221 is a prime.

It is a super-2 number, since 2×83147868949² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83147863949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41573934474 + 41573934475.

It is an arithmetic number, because the mean of its divisors is an integer number (41573934475).

Almost surely, 2^83147868949 is an apocalyptic number.

It is an amenable number.

83147868949 is a deficient number, since it is larger than the sum of its proper divisors (1).

83147868949 is an equidigital number, since it uses as much as digits as its factorization.

83147868949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83607552, while the sum is 67.

The spelling of 83147868949 in words is "eighty-three billion, one hundred forty-seven million, eight hundred sixty-eight thousand, nine hundred forty-nine".