1920680351 has 2 divisors, whose sum is σ = 1920680352. Its totient is φ = 1920680350.

The previous prime is 1920680329. The next prime is 1920680371. The reversal of 1920680351 is 1530860291.

It is a strong prime.

It is an emirp because it is prime and its reverse (1530860291) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1920680351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1920680371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960340175 + 960340176.

It is an arithmetic number, because the mean of its divisors is an integer number (960340176).

Almost surely, 2^1920680351 is an apocalyptic number.

1920680351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920680351 is an equidigital number, since it uses as much as digits as its factorization.

1920680351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1920680351 is about 43825.5673209144. The cubic root of 1920680351 is about 1243.0397912074.

The spelling of 1920680351 in words is "one billion, nine hundred twenty million, six hundred eighty thousand, three hundred fifty-one".