1897074434 has 8 divisors (see below), whose sum is σ = 2922520188. Its totient is φ = 922901040.

The previous prime is 1897074391. The next prime is 1897074449. The reversal of 1897074434 is 4344707981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1451991025 + 445083409 = 38105^2 + 21097^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12817997 + ... + 12818144.

Almost surely, 2^1897074434 is an apocalyptic number.

1897074434 is a deficient number, since it is larger than the sum of its proper divisors (1025445754).

1897074434 is a wasteful number, since it uses less digits than its factorization.

1897074434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25636180.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 1897074434 is about 43555.4179637849. The cubic root of 1897074434 is about 1237.9263020480.

The spelling of 1897074434 in words is "one billion, eight hundred ninety-seven million, seventy-four thousand, four hundred thirty-four".