2801118949 has 2 divisors, whose sum is σ = 2801118950. Its totient is φ = 2801118948.

The previous prime is 2801118941. The next prime is 2801118973. The reversal of 2801118949 is 9498111082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1605204225 + 1195914724 = 40065^2 + 34582^2 .

It is a cyclic number.

It is not a de Polignac number, because 2801118949 - 2³ = 2801118941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2801118941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400559474 + 1400559475.

It is an arithmetic number, because the mean of its divisors is an integer number (1400559475).

Almost surely, 2^2801118949 is an apocalyptic number.

It is an amenable number.

2801118949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2801118949 is an equidigital number, since it uses as much as digits as its factorization.

2801118949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 2801118949 is about 52925.5982394153. The cubic root of 2801118949 is about 1409.6474730244.

The spelling of 2801118949 in words is "two billion, eight hundred one million, one hundred eighteen thousand, nine hundred forty-nine".