1997354474 has 4 divisors (see below), whose sum is σ = 2996031714. Its totient is φ = 998677236.

The previous prime is 1997354467. The next prime is 1997354479. The reversal of 1997354474 is 4744537991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1860628225 + 136726249 = 43135^2 + 11693^2 .

It is not an unprimeable number, because it can be changed into a prime (1997354479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499338617 + ... + 499338620.

Almost surely, 2^1997354474 is an apocalyptic number.

1997354474 is a deficient number, since it is larger than the sum of its proper divisors (998677240).

1997354474 is an equidigital number, since it uses as much as digits as its factorization.

1997354474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998677239.

The product of its digits is 3810240, while the sum is 53.

The square root of 1997354474 is about 44691.7718825289. The cubic root of 1997354474 is about 1259.3652791225.

It can be divided in two parts, 19973 and 54474, that added together give a palindrome (74447).

The spelling of 1997354474 in words is "one billion, nine hundred ninety-seven million, three hundred fifty-four thousand, four hundred seventy-four".