1655212945 has 16 divisors (see below), whose sum is σ = 2042062848. Its totient is φ = 1287040320.

The previous prime is 1655212919. The next prime is 1655212967. The reversal of 1655212945 is 5492125561.

It is a de Polignac number, because none of the positive numbers 2^k-1655212945 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1655212898 and 1655212907.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 196980 + ... + 205210.

It is an arithmetic number, because the mean of its divisors is an integer number (127628928).

Almost surely, 2^1655212945 is an apocalyptic number.

It is an amenable number.

1655212945 is a deficient number, since it is larger than the sum of its proper divisors (386849903).

1655212945 is a wasteful number, since it uses less digits than its factorization.

1655212945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9360.

The product of its digits is 108000, while the sum is 40.

The square root of 1655212945 is about 40684.3083387195. The cubic root of 1655212945 is about 1182.9088782960.

The spelling of 1655212945 in words is "one billion, six hundred fifty-five million, two hundred twelve thousand, nine hundred forty-five".