1629345401 has 2 divisors, whose sum is σ = 1629345402. Its totient is φ = 1629345400.

The previous prime is 1629345373. The next prime is 1629345457. The reversal of 1629345401 is 1045439261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 833823376 + 795522025 = 28876^2 + 28205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1629345401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1629341401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814672700 + 814672701.

It is an arithmetic number, because the mean of its divisors is an integer number (814672701).

Almost surely, 2^1629345401 is an apocalyptic number.

It is an amenable number.

1629345401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1629345401 is an equidigital number, since it uses as much as digits as its factorization.

1629345401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1629345401 is about 40365.1508234517. The cubic root of 1629345401 is about 1176.7143590503.

The spelling of 1629345401 in words is "one billion, six hundred twenty-nine million, three hundred forty-five thousand, four hundred one".