1790195138 has 8 divisors (see below), whose sum is σ = 2685510588. Its totient is φ = 895024944.

The previous prime is 1790195129. The next prime is 1790195167. The reversal of 1790195138 is 8315910971.

It can be written as a sum of positive squares in 2 ways, for example, as 1482789049 + 307406089 = 38507^2 + 17533^2 .

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, 3020 + ... + 59912.

Almost surely, 2^1790195138 is an apocalyptic number.

1790195138 is a deficient number, since it is larger than the sum of its proper divisors (895315450).

1790195138 is a wasteful number, since it uses less digits than its factorization.

1790195138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72628.

The product of its (nonzero) digits is 68040, while the sum is 44.

The square root of 1790195138 is about 42310.6976780105. The cubic root of 1790195138 is about 1214.2276672427.

The spelling of 1790195138 in words is "one billion, seven hundred ninety million, one hundred ninety-five thousand, one hundred thirty-eight".