2861952749 has 2 divisors, whose sum is σ = 2861952750. Its totient is φ = 2861952748.

The previous prime is 2861952739. The next prime is 2861952761. The reversal of 2861952749 is 9472591682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2840143849 + 21808900 = 53293^2 + 4670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2861952749 - 2⁴ = 2861952733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2861952749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2861952739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1430976374 + 1430976375.

It is an arithmetic number, because the mean of its divisors is an integer number (1430976375).

Almost surely, 2^2861952749 is an apocalyptic number.

It is an amenable number.

2861952749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2861952749 is an equidigital number, since it uses as much as digits as its factorization.

2861952749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 53.

The square root of 2861952749 is about 53497.2218811407. The cubic root of 2861952749 is about 1419.7792338472.

The spelling of 2861952749 in words is "two billion, eight hundred sixty-one million, nine hundred fifty-two thousand, seven hundred forty-nine".