1975995 has 80 divisors (see below), whose sum is σ = 4390848. Its totient is φ = 829440.

The previous prime is 1975991. The next prime is 1975997. The reversal of 1975995 is 5995791.

It is not a de Polignac number, because 1975995 - 2² = 1975991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nude number because it is divisible by every one of its digits.

1975995 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1975995.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1975991) 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 79 ways as a sum of consecutive naturals, for example, 48175 + ... + 48215.

2^1975995 is an apocalyptic number.

1975995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1975995 is an abundant number, since it is smaller than the sum of its proper divisors (2414853).

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

1975995 is a wasteful number, since it uses less digits than its factorization.

1975995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 73 counting only the distinct ones).

The product of its digits is 127575, while the sum is 45.

The square root of 1975995 is about 1405.7008927933. The cubic root of 1975995 is about 125.4860013063.

The spelling of 1975995 in words is "one million, nine hundred seventy-five thousand, nine hundred ninety-five".