1606344551 has 4 divisors (see below), whose sum is σ = 1835822352. Its totient is φ = 1376866752.

The previous prime is 1606344533. The next prime is 1606344557. The reversal of 1606344551 is 1554436061.

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 1606344551 - 2³⁰ = 532602727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606344557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114738890 + ... + 114738903.

It is an arithmetic number, because the mean of its divisors is an integer number (458955588).

Almost surely, 2^1606344551 is an apocalyptic number.

1606344551 is a deficient number, since it is larger than the sum of its proper divisors (229477801).

1606344551 is an equidigital number, since it uses as much as digits as its factorization.

1606344551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229477800.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1606344551 is about 40079.2284232119. The cubic root of 1606344551 is about 1171.1510213191.

The spelling of 1606344551 in words is "one billion, six hundred six million, three hundred forty-four thousand, five hundred fifty-one".