1612406501 has 2 divisors, whose sum is σ = 1612406502. Its totient is φ = 1612406500.

The previous prime is 1612406491. The next prime is 1612406563. The reversal of 1612406501 is 1056042161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1548422500 + 63984001 = 39350^2 + 7999^2 .

It is an emirp because it is prime and its reverse (1056042161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1612406501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1612406591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806203250 + 806203251.

It is an arithmetic number, because the mean of its divisors is an integer number (806203251).

Almost surely, 2^1612406501 is an apocalyptic number.

It is an amenable number.

1612406501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612406501 is an equidigital number, since it uses as much as digits as its factorization.

1612406501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1612406501 is about 40154.7817949494. The cubic root of 1612406501 is about 1172.6223841653.

Adding to 1612406501 its reverse (1056042161), we get a palindrome (2668448662).

The spelling of 1612406501 in words is "one billion, six hundred twelve million, four hundred six thousand, five hundred one".