1975613 has 2 divisors, whose sum is σ = 1975614. Its totient is φ = 1975612.

The previous prime is 1975609. The next prime is 1975619. The reversal of 1975613 is 3165791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1898884 + 76729 = 1378^2 + 277^2 .

It is a cyclic number.

It is not a de Polignac number, because 1975613 - 2² = 1975609 is a prime.

It is a super-4 number, since 4×1975613⁴ (a number of 26 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1975613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1975619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987806 + 987807.

It is an arithmetic number, because the mean of its divisors is an integer number (987807).

2^1975613 is an apocalyptic number.

It is an amenable number.

1975613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1975613 is an equidigital number, since it uses as much as digits as its factorization.

1975613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 1975613 is about 1405.5650109476. The cubic root of 1975613 is about 125.4779144535.

The spelling of 1975613 in words is "one million, nine hundred seventy-five thousand, six hundred thirteen".