1906629 has 8 divisors (see below), whose sum is σ = 2561280. Its totient is φ = 1261536.

The previous prime is 1906627. The next prime is 1906637. The reversal of 1906629 is 9266091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1906629 - 2¹ = 1906627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1906629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909 + ... + 2730.

It is an arithmetic number, because the mean of its divisors is an integer number (320160).

2^1906629 is an apocalyptic number.

It is an amenable number.

1906629 is a deficient number, since it is larger than the sum of its proper divisors (654651).

1906629 is a wasteful number, since it uses less digits than its factorization.

1906629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1906629 is about 1380.8073725180. The cubic root of 1906629 is about 124.0001083939. Note that the first 3 decimals are identical.

The spelling of 1906629 in words is "one million, nine hundred six thousand, six hundred twenty-nine".