1955478 has 16 divisors (see below), whose sum is σ = 4469760. Its totient is φ = 558696.

The previous prime is 1955467. The next prime is 1955489. The reversal of 1955478 is 8745591.

It is an interprime number because it is at equal distance from previous prime (1955467) and next prime (1955489).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23238 + ... + 23321.

It is an arithmetic number, because the mean of its divisors is an integer number (279360).

2^1955478 is an apocalyptic number.

1955478 is an abundant number, since it is smaller than the sum of its proper divisors (2514282).

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

1955478 is a wasteful number, since it uses less digits than its factorization.

1955478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46571.

The product of its digits is 50400, while the sum is 39.

The square root of 1955478 is about 1398.3840674150. The cubic root of 1955478 is about 125.0501771886.

The spelling of 1955478 in words is "one million, nine hundred fifty-five thousand, four hundred seventy-eight".