1997449103 has 8 divisors (see below), whose sum is σ = 2151447648. Its totient is φ = 1843500384.

The previous prime is 1997449067. The next prime is 1997449117. The reversal of 1997449103 is 3019447991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1997449103 - 2¹⁴ = 1997432719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997449183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139925 + ... + 153537.

It is an arithmetic number, because the mean of its divisors is an integer number (268930956).

Almost surely, 2^1997449103 is an apocalyptic number.

1997449103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1997449103 is a deficient number, since it is larger than the sum of its proper divisors (153998545).

1997449103 is a wasteful number, since it uses less digits than its factorization.

1997449103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24913.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1997449103 is about 44692.8305547993. The cubic root of 1997449103 is about 1259.3851671956.

The spelling of 1997449103 in words is "one billion, nine hundred ninety-seven million, four hundred forty-nine thousand, one hundred three".