220154149 has 2 divisors, whose sum is σ = 220154150. Its totient is φ = 220154148.

The previous prime is 220154147. The next prime is 220154191. The reversal of 220154149 is 941451022.

220154149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203262049 + 16892100 = 14257^2 + 4110^2 .

It is a cyclic number.

It is not a de Polignac number, because 220154149 - 2¹ = 220154147 is a prime.

Together with 220154147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220154141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110077074 + 110077075.

It is an arithmetic number, because the mean of its divisors is an integer number (110077075).

Almost surely, 2^220154149 is an apocalyptic number.

It is an amenable number.

220154149 is a deficient number, since it is larger than the sum of its proper divisors (1).

220154149 is an equidigital number, since it uses as much as digits as its factorization.

220154149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 220154149 is about 14837.5924259969. The cubic root of 220154149 is about 603.8220359646.

The spelling of 220154149 in words is "two hundred twenty million, one hundred fifty-four thousand, one hundred forty-nine".