Search a number
-
+
1661518436 = 222318059983
BaseRepresentation
bin110001100001000…
…1100001001100100
311021210102212210212
41203002030021210
511400322042221
6432512034552
756113450034
oct14302141144
94253385725
101661518436
1178297a436
123a4532a58
132062c4c06
1411a9498c4
159ad01b5b
hex6308c264

1661518436 has 12 divisors (see below), whose sum is σ = 3034077312. Its totient is φ = 794639208.

The previous prime is 1661518421. The next prime is 1661518447. The reversal of 1661518436 is 6348151661.

It is a junction number, because it is equal to n+sod(n) for n = 1661518393 and 1661518402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9029900 + ... + 9030083.

It is an arithmetic number, because the mean of its divisors is an integer number (252839776).

Almost surely, 21661518436 is an apocalyptic number.

It is an amenable number.

1661518436 is a deficient number, since it is larger than the sum of its proper divisors (1372558876).

1661518436 is a wasteful number, since it uses less digits than its factorization.

1661518436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18060010 (or 18060008 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 1661518436 is about 40761.7275885113. The cubic root of 1661518436 is about 1184.4090618841.

The spelling of 1661518436 in words is "one billion, six hundred sixty-one million, five hundred eighteen thousand, four hundred thirty-six".

Divisors: 1 2 4 23 46 92 18059983 36119966 72239932 415379609 830759218 1661518436