1616486651 has 16 divisors (see below), whose sum is σ = 1839196800. Its totient is φ = 1410019968.

The previous prime is 1616486629. The next prime is 1616486653. The reversal of 1616486651 is 1566846161.

It is a cyclic number.

It is not a de Polignac number, because 1616486651 - 2¹⁸ = 1616224507 is a prime.

It is a super-2 number, since 2×1616486651² = 5226058185722391602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616486653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27896 + ... + 63333.

It is an arithmetic number, because the mean of its divisors is an integer number (114949800).

Almost surely, 2^1616486651 is an apocalyptic number.

1616486651 is a deficient number, since it is larger than the sum of its proper divisors (222710149).

1616486651 is a wasteful number, since it uses less digits than its factorization.

1616486651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91318.

The product of its digits is 207360, while the sum is 44.

The square root of 1616486651 is about 40205.5549768934. The cubic root of 1616486651 is about 1173.6106471997.

The spelling of 1616486651 in words is "one billion, six hundred sixteen million, four hundred eighty-six thousand, six hundred fifty-one".