1975830 has 32 divisors (see below), whose sum is σ = 4817664. Its totient is φ = 518496.

The previous prime is 1975823. The next prime is 1975901. The reversal of 1975830 is 385791.

It is a junction number, because it is equal to n+sod(n) for n = 1975791 and 1975800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1519 + ... + 2501.

It is an arithmetic number, because the mean of its divisors is an integer number (150552).

2^1975830 is an apocalyptic number.

1975830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1975830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2408832).

1975830 is an abundant number, since it is smaller than the sum of its proper divisors (2841834).

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

1975830 is a wasteful number, since it uses less digits than its factorization.

1975830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1975830 is about 1405.6422019846. The cubic root of 1975830 is about 125.4825084218.

The spelling of 1975830 in words is "one million, nine hundred seventy-five thousand, eight hundred thirty".