1620739151 has 2 divisors, whose sum is σ = 1620739152. Its totient is φ = 1620739150.

The previous prime is 1620739139. The next prime is 1620739177. The reversal of 1620739151 is 1519370261.

It is a weak prime.

It is an emirp because it is prime and its reverse (1519370261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1620739151 - 2¹⁰ = 1620738127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1620739111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810369575 + 810369576.

It is an arithmetic number, because the mean of its divisors is an integer number (810369576).

Almost surely, 2^1620739151 is an apocalyptic number.

1620739151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620739151 is an equidigital number, since it uses as much as digits as its factorization.

1620739151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 1620739151 is about 40258.4047249764. The cubic root of 1620739151 is about 1174.6388873104.

The spelling of 1620739151 in words is "one billion, six hundred twenty million, seven hundred thirty-nine thousand, one hundred fifty-one".