1790992397 has 2 divisors, whose sum is σ = 1790992398. Its totient is φ = 1790992396.

The previous prime is 1790992327. The next prime is 1790992417. The reversal of 1790992397 is 7932990971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1788105796 + 2886601 = 42286^2 + 1699^2 .

It is an emirp because it is prime and its reverse (7932990971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1790992397 - 2²² = 1786798093 is a prime.

It is a super-2 number, since 2×1790992397² = 6415307532223611218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1790992327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895496198 + 895496199.

It is an arithmetic number, because the mean of its divisors is an integer number (895496199).

Almost surely, 2^1790992397 is an apocalyptic number.

It is an amenable number.

1790992397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790992397 is an equidigital number, since it uses as much as digits as its factorization.

1790992397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1928934, while the sum is 56.

The square root of 1790992397 is about 42320.1181118390. The cubic root of 1790992397 is about 1214.4078915925.

The spelling of 1790992397 in words is "one billion, seven hundred ninety million, nine hundred ninety-two thousand, three hundred ninety-seven".