651350389 has 2 divisors, whose sum is σ = 651350390. Its totient is φ = 651350388.

The previous prime is 651350387. The next prime is 651350407. The reversal of 651350389 is 983053156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 461820100 + 189530289 = 21490^2 + 13767^2 .

It is a cyclic number.

It is not a de Polignac number, because 651350389 - 2¹ = 651350387 is a prime.

Together with 651350387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651350387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325675194 + 325675195.

It is an arithmetic number, because the mean of its divisors is an integer number (325675195).

Almost surely, 2^651350389 is an apocalyptic number.

It is an amenable number.

651350389 is a deficient number, since it is larger than the sum of its proper divisors (1).

651350389 is an equidigital number, since it uses as much as digits as its factorization.

651350389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 651350389 is about 25521.5671344845. The cubic root of 651350389 is about 866.8385672003.

The spelling of 651350389 in words is "six hundred fifty-one million, three hundred fifty thousand, three hundred eighty-nine".