612981829 has 2 divisors, whose sum is σ = 612981830. Its totient is φ = 612981828.

The previous prime is 612981823. The next prime is 612981907. The reversal of 612981829 is 928189216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379197729 + 233784100 = 19473^2 + 15290^2 .

It is a cyclic number.

It is not a de Polignac number, because 612981829 - 2³ = 612981821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612981821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306490914 + 306490915.

It is an arithmetic number, because the mean of its divisors is an integer number (306490915).

Almost surely, 2^612981829 is an apocalyptic number.

It is an amenable number.

612981829 is a deficient number, since it is larger than the sum of its proper divisors (1).

612981829 is an equidigital number, since it uses as much as digits as its factorization.

612981829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 46.

The square root of 612981829 is about 24758.4698436717. The cubic root of 612981829 is about 849.4722578741.

The spelling of 612981829 in words is "six hundred twelve million, nine hundred eighty-one thousand, eight hundred twenty-nine".