1974629 has 4 divisors (see below), whose sum is σ = 1995084. Its totient is φ = 1954176.

The previous prime is 1974569. The next prime is 1974641. The reversal of 1974629 is 9264791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9264791 = 23 ⋅402817.

It can be written as a sum of positive squares in 2 ways, for example, as 1020100 + 954529 = 1010^2 + 977^2 .

It is a cyclic number.

It is not a de Polignac number, because 1974629 - 2⁸ = 1974373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1974592 and 1974601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10082 + ... + 10275.

It is an arithmetic number, because the mean of its divisors is an integer number (498771).

2^1974629 is an apocalyptic number.

It is an amenable number.

1974629 is a deficient number, since it is larger than the sum of its proper divisors (20455).

1974629 is an equidigital number, since it uses as much as digits as its factorization.

1974629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20454.

The product of its digits is 27216, while the sum is 38.

The square root of 1974629 is about 1405.2149301797. The cubic root of 1974629 is about 125.4570785961.

The spelling of 1974629 in words is "one million, nine hundred seventy-four thousand, six hundred twenty-nine".