1606151651 has 4 divisors (see below), whose sum is σ = 1729701792. Its totient is φ = 1482601512.

The previous prime is 1606151647. The next prime is 1606151693. The reversal of 1606151651 is 1561516061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1606151651 - 2² = 1606151647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1606153651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61775051 + ... + 61775076.

It is an arithmetic number, because the mean of its divisors is an integer number (432425448).

Almost surely, 2^1606151651 is an apocalyptic number.

1606151651 is a deficient number, since it is larger than the sum of its proper divisors (123550141).

1606151651 is a wasteful number, since it uses less digits than its factorization.

1606151651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123550140.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 1606151651 is about 40076.8218675084. The cubic root of 1606151651 is about 1171.1041397051.

The spelling of 1606151651 in words is "one billion, six hundred six million, one hundred fifty-one thousand, six hundred fifty-one".