Search a number
-
+
18937914601 = 31976839221
BaseRepresentation
bin10001101000110010…
…011010010011101001
31210212211000201222111
4101220302122103221
5302241101231401
612411105122321
71240204422004
oct215062322351
953784021874
1018937914601
118038a605a1
1238063293a1
131a2a640538
14cb921653b
1575c8c3e51
hex468c9a4e9

18937914601 has 16 divisors (see below), whose sum is σ = 19781411328. Its totient is φ = 18109555200.

The previous prime is 18937914599. The next prime is 18937914607. The reversal of 18937914601 is 10641973981.

It is not a de Polignac number, because 18937914601 - 21 = 18937914599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18937914607) 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, 2049171 + ... + 2058391.

It is an arithmetic number, because the mean of its divisors is an integer number (1236338208).

Almost surely, 218937914601 is an apocalyptic number.

It is an amenable number.

18937914601 is a deficient number, since it is larger than the sum of its proper divisors (843496727).

18937914601 is an equidigital number, since it uses as much as digits as its factorization.

18937914601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10032.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 18937914601 in words is "eighteen billion, nine hundred thirty-seven million, nine hundred fourteen thousand, six hundred one".

Divisors: 1 31 97 683 3007 9221 21173 66251 285851 894437 2053781 6297943 27727547 195236233 610900471 18937914601