1973189474 has 4 divisors (see below), whose sum is σ = 2959784214. Its totient is φ = 986594736.

The previous prime is 1973189467. The next prime is 1973189549. The reversal of 1973189474 is 4749813791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4749813791 = 103 ⋅46114697.

It can be written as a sum of positive squares in only one way, i.e., 1440733849 + 532455625 = 37957^2 + 23075^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493297367 + ... + 493297370.

Almost surely, 2^1973189474 is an apocalyptic number.

1973189474 is a deficient number, since it is larger than the sum of its proper divisors (986594740).

1973189474 is an equidigital number, since it uses as much as digits as its factorization.

1973189474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986594739.

The product of its digits is 1524096, while the sum is 53.

The square root of 1973189474 is about 44420.5974070588. The cubic root of 1973189474 is about 1254.2658466017.

The spelling of 1973189474 in words is "one billion, nine hundred seventy-three million, one hundred eighty-nine thousand, four hundred seventy-four".