1956138 has 8 divisors (see below), whose sum is σ = 3912288. Its totient is φ = 652044.

The previous prime is 1956109. The next prime is 1956161. The reversal of 1956138 is 8316591.

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

1956138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1956099 and 1956108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163006 + ... + 163017.

It is an arithmetic number, because the mean of its divisors is an integer number (489036).

2^1956138 is an apocalyptic number.

1956138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1956138 is a wasteful number, since it uses less digits than its factorization.

1956138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326028.

The product of its digits is 6480, while the sum is 33.

The square root of 1956138 is about 1398.6200341765. The cubic root of 1956138 is about 125.0642443090.

The spelling of 1956138 in words is "one million, nine hundred fifty-six thousand, one hundred thirty-eight".