1629149 has 2 divisors, whose sum is σ = 1629150. Its totient is φ = 1629148.

The previous prime is 1629137. The next prime is 1629163. The reversal of 1629149 is 9419261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1545049 + 84100 = 1243^2 + 290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1629149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1629109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814574 + 814575.

It is an arithmetic number, because the mean of its divisors is an integer number (814575).

2^1629149 is an apocalyptic number.

It is an amenable number.

1629149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1629149 is an equidigital number, since it uses as much as digits as its factorization.

1629149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 1629149 is about 1276.3812126477. The cubic root of 1629149 is about 117.6667076838. Note that the first 3 decimals are identical.

Subtracting from 1629149 its product of digits (3888), we obtain a palindrome (1625261).

The spelling of 1629149 in words is "one million, six hundred twenty-nine thousand, one hundred forty-nine".