2991853 has 2 divisors, whose sum is σ = 2991854. Its totient is φ = 2991852.

The previous prime is 2991803. The next prime is 2991871. The reversal of 2991853 is 3581992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2965284 + 26569 = 1722^2 + 163^2 .

It is a cyclic number.

It is not a de Polignac number, because 2991853 - 2¹³ = 2983661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2991803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495926 + 1495927.

It is an arithmetic number, because the mean of its divisors is an integer number (1495927).

2^2991853 is an apocalyptic number.

It is an amenable number.

2991853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991853 is an equidigital number, since it uses as much as digits as its factorization.

2991853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 2991853 is about 1729.6973723747. The cubic root of 2991853 is about 144.0942830341.

It can be divided in two parts, 2991 and 853, that added together give a square (3844 = 62²).

The spelling of 2991853 in words is "two million, nine hundred ninety-one thousand, eight hundred fifty-three".