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18460741 = 131420057
BaseRepresentation
bin100011001101…
…1000001000101
31021201220101011
41012123001011
514211220431
61455402221
7312625255
oct106330105
937656334
1018460741
11a469912
126223371
133a94920
142647965
151949cb1
hex119b045

18460741 has 4 divisors (see below), whose sum is σ = 19880812. Its totient is φ = 17040672.

The previous prime is 18460699. The next prime is 18460753. The reversal of 18460741 is 14706481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14706481 = 41935099.

It can be written as a sum of positive squares in 2 ways, for example, as 7924225 + 10536516 = 2815^2 + 3246^2 .

It is a cyclic number.

It is not a de Polignac number, because 18460741 - 213 = 18452549 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 (18460241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710016 + ... + 710041.

It is an arithmetic number, because the mean of its divisors is an integer number (4970203).

Almost surely, 218460741 is an apocalyptic number.

It is an amenable number.

18460741 is a deficient number, since it is larger than the sum of its proper divisors (1420071).

18460741 is a wasteful number, since it uses less digits than its factorization.

18460741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420070.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18460741 is about 4296.5964436982. The cubic root of 18460741 is about 264.2914070637.

The spelling of 18460741 in words is "eighteen million, four hundred sixty thousand, seven hundred forty-one".

Divisors: 1 13 1420057 18460741