830628913421 has 2 divisors, whose sum is σ = 830628913422. Its totient is φ = 830628913420.

The previous prime is 830628913417. The next prime is 830628913487. The reversal of 830628913421 is 124319826038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742337328100 + 88291585321 = 861590^2 + 297139^2 .

It is a cyclic number.

It is not a de Polignac number, because 830628913421 - 2² = 830628913417 is a prime.

It is a super-2 number, since 2×830628913421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830628915421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415314456710 + 415314456711.

It is an arithmetic number, because the mean of its divisors is an integer number (415314456711).

Almost surely, 2^830628913421 is an apocalyptic number.

It is an amenable number.

830628913421 is a deficient number, since it is larger than the sum of its proper divisors (1).

830628913421 is an equidigital number, since it uses as much as digits as its factorization.

830628913421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 830628913421 in words is "eight hundred thirty billion, six hundred twenty-eight million, nine hundred thirteen thousand, four hundred twenty-one".