1210413989 has 2 divisors, whose sum is σ = 1210413990. Its totient is φ = 1210413988.

The previous prime is 1210413961. The next prime is 1210414061. The reversal of 1210413989 is 9893140121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 823977025 + 386436964 = 28705^2 + 19658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210413989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210413929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605206994 + 605206995.

It is an arithmetic number, because the mean of its divisors is an integer number (605206995).

Almost surely, 2^1210413989 is an apocalyptic number.

It is an amenable number.

1210413989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210413989 is an equidigital number, since it uses as much as digits as its factorization.

1210413989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1210413989 is about 34791.0044264318. The cubic root of 1210413989 is about 1065.7237511750.

The spelling of 1210413989 in words is "one billion, two hundred ten million, four hundred thirteen thousand, nine hundred eighty-nine".