1651155655 has 8 divisors (see below), whose sum is σ = 1994008032. Its totient is φ = 1312510368.

The previous prime is 1651155619. The next prime is 1651155659. The reversal of 1651155655 is 5565511561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1651155655 - 2²⁷ = 1516937927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651155659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050907 + ... + 1052476.

It is an arithmetic number, because the mean of its divisors is an integer number (249251004).

Almost surely, 2^1651155655 is an apocalyptic number.

1651155655 is a deficient number, since it is larger than the sum of its proper divisors (342852377).

1651155655 is a wasteful number, since it uses less digits than its factorization.

1651155655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103545.

The product of its digits is 112500, while the sum is 40.

The square root of 1651155655 is about 40634.4146629430. The cubic root of 1651155655 is about 1181.9415644547.

The spelling of 1651155655 in words is "one billion, six hundred fifty-one million, one hundred fifty-five thousand, six hundred fifty-five".