1630956 has 12 divisors (see below), whose sum is σ = 3805592. Its totient is φ = 543648.

The previous prime is 1630943. The next prime is 1630987. The reversal of 1630956 is 6590361.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67945 + ... + 67968.

2^1630956 is an apocalyptic number.

It is an amenable number.

1630956 is an abundant number, since it is smaller than the sum of its proper divisors (2174636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1630956 is a wasteful number, since it uses less digits than its factorization.

1630956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135920 (or 135918 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 1630956 is about 1277.0888770951. The cubic root of 1630956 is about 117.7101956597.

The spelling of 1630956 in words is "one million, six hundred thirty thousand, nine hundred fifty-six".