980645123 has 2 divisors, whose sum is σ = 980645124. Its totient is φ = 980645122.

The previous prime is 980645117. The next prime is 980645129. The reversal of 980645123 is 321546089.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (980645117) and next prime (980645129).

It is an emirp because it is prime and its reverse (321546089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 980645123 - 2⁶ = 980645059 is a prime.

It is equal to p_49912733 and since 980645123 and 49912733 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (980645129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490322561 + 490322562.

It is an arithmetic number, because the mean of its divisors is an integer number (490322562).

Almost surely, 2^980645123 is an apocalyptic number.

980645123 is a deficient number, since it is larger than the sum of its proper divisors (1).

980645123 is an equidigital number, since it uses as much as digits as its factorization.

980645123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 980645123 is about 31315.2538389840. The cubic root of 980645123 is about 993.5062974362.

The spelling of 980645123 in words is "nine hundred eighty million, six hundred forty-five thousand, one hundred twenty-three".