920792491 has 2 divisors, whose sum is σ = 920792492. Its totient is φ = 920792490.

The previous prime is 920792489. The next prime is 920792501. The reversal of 920792491 is 194297029.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 920792491 - 2¹ = 920792489 is a prime.

It is a super-3 number, since 3×920792491³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 920792489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (920792461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460396245 + 460396246.

It is an arithmetic number, because the mean of its divisors is an integer number (460396246).

Almost surely, 2^920792491 is an apocalyptic number.

920792491 is a deficient number, since it is larger than the sum of its proper divisors (1).

920792491 is an equidigital number, since it uses as much as digits as its factorization.

920792491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 920792491 is about 30344.5627913799. The cubic root of 920792491 is about 972.8680097998.

The spelling of 920792491 in words is "nine hundred twenty million, seven hundred ninety-two thousand, four hundred ninety-one".