1790232139 has 2 divisors, whose sum is σ = 1790232140. Its totient is φ = 1790232138.

The previous prime is 1790232137. The next prime is 1790232253. The reversal of 1790232139 is 9312320971.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9312320971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1790232139 - 2¹ = 1790232137 is a prime.

It is a super-2 number, since 2×1790232139² = 6409862223017030642, which contains 22 as substring.

Together with 1790232137, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1790232098 and 1790232107.

It is not a weakly prime, because it can be changed into another prime (1790232137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895116069 + 895116070.

It is an arithmetic number, because the mean of its divisors is an integer number (895116070).

Almost surely, 2^1790232139 is an apocalyptic number.

1790232139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790232139 is an equidigital number, since it uses as much as digits as its factorization.

1790232139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 1790232139 is about 42311.1349292358. The cubic root of 1790232139 is about 1214.2360326861.

The spelling of 1790232139 in words is "one billion, seven hundred ninety million, two hundred thirty-two thousand, one hundred thirty-nine".