1997825003 has 4 divisors (see below), whose sum is σ = 1998707760. Its totient is φ = 1996942248.

The previous prime is 1997824991. The next prime is 1997825029. The reversal of 1997825003 is 3005287991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3005287991 = 53 ⋅56703547.

It is a cyclic number.

It is not a de Polignac number, because 1997825003 - 2⁴ = 1997824987 is a prime.

It is a super-2 number, since 2×1997825003² = 7982609485223900018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1997825503) 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, 437975 + ... + 442512.

It is an arithmetic number, because the mean of its divisors is an integer number (499676940).

Almost surely, 2^1997825003 is an apocalyptic number.

1997825003 is a deficient number, since it is larger than the sum of its proper divisors (882757).

1997825003 is an equidigital number, since it uses as much as digits as its factorization.

1997825003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882756.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 1997825003 is about 44697.0357294530. The cubic root of 1997825003 is about 1259.4641634831.

The spelling of 1997825003 in words is "one billion, nine hundred ninety-seven million, eight hundred twenty-five thousand, three".