1630156 has 12 divisors (see below), whose sum is σ = 3112200. Its totient is φ = 740960.

The previous prime is 1630141. The next prime is 1630159. The reversal of 1630156 is 6510361.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1630159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18481 + ... + 18568.

It is an arithmetic number, because the mean of its divisors is an integer number (259350).

2^1630156 is an apocalyptic number.

It is an amenable number.

1630156 is a deficient number, since it is larger than the sum of its proper divisors (1482044).

1630156 is a wasteful number, since it uses less digits than its factorization.

1630156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37064 (or 37062 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1630156 is about 1276.7756263338. The cubic root of 1630156 is about 117.6909465082.

The spelling of 1630156 in words is "one million, six hundred thirty thousand, one hundred fifty-six".